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The filter Property and Its Functions\u003C\u002Fh2>\u003Ctable>\u003Cthead>\u003Ctr>\u003Cth>Function\u003C\u002Fth>\u003Cth>What it does\u003C\u002Fth>\u003Cth>Example\u003C\u002Fth>\u003C\u002Ftr>\u003C\u002Fthead>\u003Ctbody>\u003Ctr>\u003Ctd>\u003Ccode>blur()\u003C\u002Fcode>\u003C\u002Ftd>\u003Ctd>Gaussian blur; takes a length\u003C\u002Ftd>\u003Ctd>\u003Ccode>blur(4px)\u003C\u002Fcode>\u003C\u002Ftd>\u003C\u002Ftr>\u003Ctr>\u003Ctd>\u003Ccode>brightness()\u003C\u002Fcode>\u003C\u002Ftd>\u003Ctd>Lightens or darkens; 1 is normal\u003C\u002Ftd>\u003Ctd>\u003Ccode>brightness(1.2)\u003C\u002Fcode>\u003C\u002Ftd>\u003C\u002Ftr>\u003Ctr>\u003Ctd>\u003Ccode>contrast()\u003C\u002Fcode>\u003C\u002Ftd>\u003Ctd>Changes contrast; 1 is normal\u003C\u002Ftd>\u003Ctd>\u003Ccode>contrast(150%)\u003C\u002Fcode>\u003C\u002Ftd>\u003C\u002Ftr>\u003Ctr>\u003Ctd>\u003Ccode>grayscale()\u003C\u002Fcode>\u003C\u002Ftd>\u003Ctd>Removes color; 0 to 1\u003C\u002Ftd>\u003Ctd>\u003Ccode>grayscale(1)\u003C\u002Fcode>\u003C\u002Ftd>\u003C\u002Ftr>\u003Ctr>\u003Ctd>\u003Ccode>sepia()\u003C\u002Fcode>\u003C\u002Ftd>\u003Ctd>Warm vintage tone\u003C\u002Ftd>\u003Ctd>\u003Ccode>sepia(.8)\u003C\u002Fcode>\u003C\u002Ftd>\u003C\u002Ftr>\u003Ctr>\u003Ctd>\u003Ccode>saturate()\u003C\u002Fcode>\u003C\u002Ftd>\u003Ctd>Boosts or reduces color intensity\u003C\u002Ftd>\u003Ctd>\u003Ccode>saturate(1.8)\u003C\u002Fcode>\u003C\u002Ftd>\u003C\u002Ftr>\u003Ctr>\u003Ctd>\u003Ccode>hue-rotate()\u003C\u002Fcode>\u003C\u002Ftd>\u003Ctd>Rotates hue on the color wheel\u003C\u002Ftd>\u003Ctd>\u003Ccode>hue-rotate(90deg)\u003C\u002Fcode>\u003C\u002Ftd>\u003C\u002Ftr>\u003Ctr>\u003Ctd>\u003Ccode>invert()\u003C\u002Fcode>\u003C\u002Ftd>\u003Ctd>Inverts colors; 0 to 1\u003C\u002Ftd>\u003Ctd>\u003Ccode>invert(1)\u003C\u002Fcode>\u003C\u002Ftd>\u003C\u002Ftr>\u003Ctr>\u003Ctd>\u003Ccode>opacity()\u003C\u002Fcode>\u003C\u002Ftd>\u003Ctd>Transparency as a filter\u003C\u002Ftd>\u003Ctd>\u003Ccode>opacity(.5)\u003C\u002Fcode>\u003C\u002Ftd>\u003C\u002Ftr>\u003Ctr>\u003Ctd>\u003Ccode>drop-shadow()\u003C\u002Fcode>\u003C\u002Ftd>\u003Ctd>Shadow following the visible shape\u003C\u002Ftd>\u003Ctd>\u003Ccode>drop-shadow(0 4px 6px rgb(0 0 0 \u002F 30%))\u003C\u002Fcode>\u003C\u002Ftd>\u003C\u002Ftr>\u003Ctr>\u003Ctd>\u003Ccode>url()\u003C\u002Fcode>\u003C\u002Ftd>\u003Ctd>Reference an SVG filter\u003C\u002Ftd>\u003Ctd>\u003Ccode>url(#noise)\u003C\u002Fcode>\u003C\u002Ftd>\u003C\u002Ftr>\u003C\u002Ftbody>\u003C\u002Ftable>\u003Ch2 id=\"2-chaining-filters\">2. Chaining Filters\u003C\u002Fh2>\u003Cp>Separate several functions with spaces: \u003Ccode>filter: grayscale(.6) contrast(1.1) brightness(1.05);\u003C\u002Fcode>. \u003Cstrong>Order matters\u003C\u002Fstrong>, because each function is applied to the result of the previous one. \u003Ccode>filter: none\u003C\u002Fcode> removes all filters.\u003C\u002Fp>\u003Ch2 id=\"3-common-filter-use-cases\">3. Common Filter Use Cases\u003C\u002Fh2>\u003Cul>\u003Cli>\u003Cstrong>Hover effects:\u003C\u002Fstrong> grayscale images that turn colorful on hover.\u003C\u002Fli>\u003Cli>\u003Cstrong>Disabled states:\u003C\u002Fstrong> \u003Ccode>grayscale(1) opacity(.6)\u003C\u002Fcode>.\u003C\u002Fli>\u003Cli>\u003Cstrong>Dark mode images:\u003C\u002Fstrong> slightly lower brightness or contrast for photos.\u003C\u002Fli>\u003Cli>\u003Cstrong>Icons:\u003C\u002Fstrong> \u003Ccode>invert(1)\u003C\u002Fcode> to switch black icons to white.\u003C\u002Fli>\u003Cli>\u003Cstrong>Blurring content:\u003C\u002Fstrong> hide sensitive information, or blur the page behind a modal.\u003C\u002Fli>\u003Cli>\u003Cstrong>Shapes with transparency:\u003C\u002Fstrong> \u003Ccode>drop-shadow()\u003C\u002Fcode> on PNG, SVG or clipped elements.\u003C\u002Fli>\u003C\u002Ful>\u003Ch2 id=\"4-what-is-backdrop-filter\">4. What Is backdrop-filter?\u003C\u002Fh2>\u003Cp>\u003Ccode>backdrop-filter\u003C\u002Fcode> uses the same functions as \u003Ccode>filter\u003C\u002Fcode>, but applies them to everything visible \u003Cstrong>behind the element\u003C\u002Fstrong>, within the element's border box (rounded corners are respected). The element itself, and its text, stay sharp. For the effect to be visible, the element \u003Cstrong>must have a semi-transparent background\u003C\u002Fstrong>.\u003C\u002Fp>\u003Cpre>\u003Ccode>.glass {\n  background: rgb(255 255 255 \u002F 15%);\n  -webkit-backdrop-filter: blur(12px) saturate(160%);\n  backdrop-filter: blur(12px) saturate(160%);\n  border: 1px solid rgb(255 255 255 \u002F 30%);\n  border-radius: 16px;\n}\u003C\u002Fcode>\u003C\u002Fpre>\u003Ch2 id=\"5-glassmorphism-recipe\">5. Glassmorphism Recipe\u003C\u002Fh2>\u003Col>\u003Cli>Place a colorful, detailed background behind the card (gradient, image or blobs). A plain white background hides the effect.\u003C\u002Fli>\u003Cli>Give the card a \u003Cstrong>translucent\u003C\u002Fstrong> background: \u003Ccode>rgb(255 255 255 \u002F 10-25%)\u003C\u002Fcode>.\u003C\u002Fli>\u003Cli>Add \u003Ccode>backdrop-filter: blur(10px to 20px)\u003C\u002Fcode>, optionally with \u003Ccode>saturate(150%)\u003C\u002Fcode> to keep colors lively.\u003C\u002Fli>\u003Cli>Add a thin light border (\u003Ccode>1px solid rgb(255 255 255 \u002F 30%)\u003C\u002Fcode>) to imitate the edge of glass.\u003C\u002Fli>\u003Cli>Add a soft shadow for depth: \u003Ccode>0 8px 32px rgb(0 0 0 \u002F 20%)\u003C\u002Fcode>.\u003C\u002Fli>\u003Cli>Check text contrast carefully.\u003C\u002Fli>\u003C\u002Fol>\u003Ch2 id=\"6-filter-vs-backdrop-filter\">6. filter vs backdrop-filter\u003C\u002Fh2>\u003Ctable>\u003Cthead>\u003Ctr>\u003Cth>\u003C\u002Fth>\u003Cth>filter\u003C\u002Fth>\u003Cth>backdrop-filter\u003C\u002Fth>\u003C\u002Ftr>\u003C\u002Fthead>\u003Ctbody>\u003Ctr>\u003Ctd>Affects\u003C\u002Ftd>\u003Ctd>The element and its children\u003C\u002Ftd>\u003Ctd>Content behind the element\u003C\u002Ftd>\u003C\u002Ftr>\u003Ctr>\u003Ctd>Needs transparency\u003C\u002Ftd>\u003Ctd>No\u003C\u002Ftd>\u003Ctd>Yes (translucent background)\u003C\u002Ftd>\u003C\u002Ftr>\u003Ctr>\u003Ctd>Creates stacking context\u003C\u002Ftd>\u003Ctd>Yes\u003C\u002Ftd>\u003Ctd>Yes\u003C\u002Ftd>\u003C\u002Ftr>\u003Ctr>\u003Ctd>Typical use\u003C\u002Ftd>\u003Ctd>Image effects, disabled states\u003C\u002Ftd>\u003Ctd>Frosted glass navbars, modals, cards\u003C\u002Ftd>\u003C\u002Ftr>\u003C\u002Ftbody>\u003C\u002Ftable>\u003Ch2 id=\"7-browser-support-and-fallbacks\">7. Browser Support and Fallbacks\u003C\u002Fh2>\u003Cp>\u003Ccode>filter\u003C\u002Fcode> is supported everywhere. \u003Ccode>backdrop-filter\u003C\u002Fcode> works in all current major browsers, though older Safari versions need the \u003Ccode>-webkit-backdrop-filter\u003C\u002Fcode> prefix, so include both. Provide a fallback with \u003Ccode>@supports\u003C\u002Fcode>:\u003C\u002Fp>\u003Cpre>\u003Ccode>.glass { background: rgb(15 23 42 \u002F 90%); }\n@supports (backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px)) {\n  .glass { background: rgb(255 255 255 \u002F 15%); backdrop-filter: blur(12px); }\n}\u003C\u002Fcode>\u003C\u002Fpre>\u003Ch2 id=\"8-performance\">8. Performance\u003C\u002Fh2>\u003Cul>\u003Cli>Blur is GPU heavy. Large blur radii on big areas can drop frame rates, especially on mobile and while scrolling.\u003C\u002Fli>\u003Cli>Keep \u003Ccode>backdrop-filter\u003C\u002Fcode> elements small (navbars, cards) and avoid stacking many of them.\u003C\u002Fli>\u003Cli>Do not animate blur radius on large elements. Fade opacity instead.\u003C\u002Fli>\u003Cli>Fixed or sticky elements with backdrop-filter are fine, but test scrolling on real devices.\u003C\u002Fli>\u003C\u002Ful>\u003Ch2 id=\"9-accessibility\">9. Accessibility\u003C\u002Fh2>\u003Cul>\u003Cli>Glass cards sit over changing backgrounds, so text contrast can drop. Use a slightly darker translucent tint or add a solid fallback behind text.\u003C\u002Fli>\u003Cli>Respect users who prefer less transparency: \u003Ccode>@media (prefers-reduced-transparency: reduce)\u003C\u002Fcode> can switch to a solid background where supported.\u003C\u002Fli>\u003Cli>Do not use blur to hide information that must stay private, since it is only visual.\u003C\u002Fli>\u003C\u002Ful>\u003Ch2 id=\"best-practices\">Best Practices\u003C\u002Fh2>\u003Cul>\u003Cli>Use subtle values: blur 8 to 16px, background alpha 10 to 25%.\u003C\u002Fli>\u003Cli>Always add the \u003Ccode>-webkit-\u003C\u002Fcode> prefixed backdrop-filter.\u003C\u002Fli>\u003Cli>Use \u003Ccode>drop-shadow()\u003C\u002Fcode> for non-rectangular shapes and \u003Ccode>box-shadow\u003C\u002Fcode> for boxes.\u003C\u002Fli>\u003Cli>Animate filter values with transitions on small elements only.\u003C\u002Fli>\u003C\u002Ful>\u003Ch2 id=\"common-mistakes\">Common Mistakes\u003C\u002Fh2>\u003Cul>\u003Cli>Using \u003Ccode>backdrop-filter\u003C\u002Fcode> with a solid opaque background, so nothing is visible.\u003C\u002Fli>\u003Cli>Expecting \u003Ccode>filter: blur()\u003C\u002Fcode> to blur only the background. It blurs the element and its text.\u003C\u002Fli>\u003Cli>Forgetting that a filter creates a new stacking context and containing block for fixed-position children.\u003C\u002Fli>\u003Cli>Applying heavy filters to many elements at once.\u003C\u002Fli>\u003C\u002Ful>\u003Ch2 id=\"summary\">Summary\u003C\u002Fh2>\u003Cp>CSS filters transform how elements look, from grayscale hovers to drop-shadows, and backdrop-filter blurs what lies behind an element to create glassmorphism. Combine a translucent background, blur, a thin border and a soft shadow, keep it light for performance, and check contrast. Explore the examples below.\u003C\u002Fp>\u003Cdiv class=\"try-it-yourself language-html\">\u003Cpre>\u003Ccode><style>\n  body { font-family: sans-serif; }\n  .t { display: inline-block; width: 110px; height: 90px; margin: 6px; border-radius: 10px; color: #fff; font-size: 12px; padding: 6px; background: conic-gradient(from 90deg, #ef4444, #f59e0b, #22c55e, #3b82f6, #a855f7, #ef4444); }\n<\u002Fstyle>\n<div class='t'>original<\u002Fdiv>\n<div class='t' style='filter: blur(3px)'>blur(3px)<\u002Fdiv>\n<div class='t' style='filter: grayscale(1)'>grayscale(1)<\u002Fdiv>\n<div class='t' style='filter: sepia(.9)'>sepia(.9)<\u002Fdiv>\n<div class='t' style='filter: hue-rotate(90deg)'>hue-rotate(90deg)<\u002Fdiv>\n<div class='t' style='filter: saturate(2) brightness(1.1)'>saturate + brightness<\u002Fdiv>\n<div class='t' style='filter: invert(1)'>invert(1)<\u002Fdiv>\n<div class='t' style='filter: contrast(2)'>contrast(2)<\u002Fdiv>\u003C\u002Fcode>\u003C\u002Fpre>\u003C\u002Fdiv>\u003Cdiv class=\"try-it-yourself language-html\">\u003Cpre>\u003Ccode><style>\n  .img { width: 220px; height: 150px; border-radius: 12px; background: conic-gradient(from 45deg, #f43f5e, #f59e0b, #10b981, #3b82f6, #f43f5e); filter: grayscale(1) brightness(.9); transition: filter .4s, transform .4s; margin: 10px; display: inline-block; }\n  .img:hover { filter: grayscale(0) brightness(1.05); transform: scale(1.03); }\n  .disabled { display: inline-block; padding: 10px 20px; background: #2563eb; color: #fff; border-radius: 8px; font-family: sans-serif; filter: grayscale(1) opacity(.5); }\n<\u002Fstyle>\n<div class='img'><\u002Fdiv><span class='disabled'>Disabled button<\u002Fspan>\n<p style='font-family:sans-serif'>Hover the box to bring the color back.<\u002Fp>\u003C\u002Fcode>\u003C\u002Fpre>\u003C\u002Fdiv>\u003Cdiv class=\"try-it-yourself language-html\">\u003Cpre>\u003Ccode><style>\n  body { margin: 0; font-family: sans-serif; }\n  .scene { min-height: 300px; display: grid; place-items: center; padding: 24px; background: radial-gradient(circle at 20% 25%, #f472b6 0 90px, transparent 91px), radial-gradient(circle at 80% 70%, #22d3ee 0 110px, transparent 111px), linear-gradient(135deg, #4f46e5, #7c3aed); }\n  .glass { width: 280px; padding: 24px; color: #fff; background: rgb(255 255 255 \u002F 15%); -webkit-backdrop-filter: blur(14px) saturate(160%); backdrop-filter: blur(14px) saturate(160%); border: 1px solid rgb(255 255 255 \u002F 30%); border-radius: 18px; box-shadow: 0 8px 32px rgb(0 0 0 \u002F 25%); }\n  .glass h3 { margin: 0 0 8px; }\n<\u002Fstyle>\n<div class='scene'><div class='glass'><h3>Glassmorphism<\u002Fh3><p>Frosted glass card with backdrop-filter, a translucent background and a thin light border.<\u002Fp><\u002Fdiv><\u002Fdiv>\u003C\u002Fcode>\u003C\u002Fpre>\u003C\u002Fdiv>\u003Cdiv class=\"try-it-yourself language-html\">\u003Cpre>\u003Ccode><style>\n  body { margin: 0; font-family: sans-serif; height: 260px; overflow: auto; background: linear-gradient(180deg, #fde68a, #f472b6, #60a5fa, #34d399); }\n  nav { position: sticky; top: 0; display: flex; gap: 18px; padding: 14px 20px; background: rgb(255 255 255 \u002F 30%); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); border-bottom: 1px solid rgb(255 255 255 \u002F 40%); }\n  nav a { color: #0f172a; text-decoration: none; font-weight: bold; }\n  .blob { height: 90px; margin: 18px; border-radius: 16px; background: rgb(15 23 42 \u002F 70%); }\n<\u002Fstyle>\n<nav><a href='#'>Home<\u002Fa><a href='#'>Courses<\u002Fa><a href='#'>Contact<\u002Fa><\u002Fnav>\n<div class='blob'><\u002Fdiv><div class='blob'><\u002Fdiv><div class='blob'><\u002Fdiv><div class='blob'><\u002Fdiv>\n<p style='padding:0 20px'>Scroll: the sticky nav blurs the content moving under it.<\u002Fp>\u003C\u002Fcode>\u003C\u002Fpre>\u003C\u002Fdiv>\u003Cdiv class=\"try-it-yourself language-html\">\u003Cpre>\u003Ccode><style>\n  body { font-family: sans-serif; padding: 24px; }\n  .tri { width: 120px; height: 110px; background: #f59e0b; clip-path: polygon(50% 0, 100% 100%, 0 100%); }\n  .wrap { display: inline-block; margin: 20px; }\n  .box-sh .tri { box-shadow: 0 10px 14px rgb(0 0 0 \u002F 50%); }\n  .drop { filter: drop-shadow(0 10px 8px rgb(0 0 0 \u002F 50%)); }\n  .glass-fb { margin-top: 16px; padding: 16px; border-radius: 12px; background: rgb(15 23 42 \u002F 90%); color: #fff; }\n  @supports (backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px)) { .glass-fb { background: rgb(15 23 42 \u002F 40%); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); } }\n<\u002Fstyle>\n<div class='wrap box-sh'><div class='tri'><\u002Fdiv><\u002Fdiv> box-shadow is clipped away\n<div class='wrap drop'><div class='tri'><\u002Fdiv><\u002Fdiv> drop-shadow follows the shape\n<div class='glass-fb'>@supports fallback: solid tint if backdrop-filter is unsupported<\u002Fdiv>\u003C\u002Fcode>\u003C\u002Fpre>\u003C\u002Fdiv>",{"name":335,"slug":336},{"name":367,"slug":368},{"slug":440,"display_name":441,"job_title":5,"short_bio":5,"expertise_tags":442,"headshot":5,"long_bio":5,"credentials":5,"twitter_url":5,"linkedin_url":5,"github_url":5,"personal_website_url":5,"other_sameas_urls":5,"topics":443,"posts":444},"badar-khalil","Badar Khalil",[],[],[],"Article","https:\u002F\u002Fwpfsharp.com\u002Ftopics\u002Fcss-filters-backdrop-filter-glassmorphism","CSS Filters & backdrop-filter Glassmorphism Guide","Learn CSS filter functions and backdrop-filter to build glassmorphism: blur, brightness, grayscale, drop-shadow, frosted glass cards and tips.",[450,454,458,462,466,470,474,478,482,486,490,494,498],{"id":451,"text":452,"level":23,"children":453},"what-are-css-filters-and-backdrop-filter","What Are CSS Filters and backdrop-filter?",[],{"id":455,"text":456,"level":23,"children":457},"1-the-filter-property-and-its-functions","1. The filter Property and Its Functions",[],{"id":459,"text":460,"level":23,"children":461},"2-chaining-filters","2. Chaining Filters",[],{"id":463,"text":464,"level":23,"children":465},"3-common-filter-use-cases","3. Common Filter Use Cases",[],{"id":467,"text":468,"level":23,"children":469},"4-what-is-backdrop-filter","4. What Is backdrop-filter?",[],{"id":471,"text":472,"level":23,"children":473},"5-glassmorphism-recipe","5. Glassmorphism Recipe",[],{"id":475,"text":476,"level":23,"children":477},"6-filter-vs-backdrop-filter","6. filter vs backdrop-filter",[],{"id":479,"text":480,"level":23,"children":481},"7-browser-support-and-fallbacks","7. Browser Support and Fallbacks",[],{"id":483,"text":484,"level":23,"children":485},"8-performance","8. Performance",[],{"id":487,"text":488,"level":23,"children":489},"9-accessibility","9. Accessibility",[],{"id":491,"text":492,"level":23,"children":493},"best-practices","Best Practices",[],{"id":495,"text":496,"level":23,"children":497},"common-mistakes","Common Mistakes",[],{"id":499,"text":500,"level":23,"children":501},"summary","Summary",[],[503,508,511,514,517],{"id":504,"language":505,"code":506,"is_editable":507},284,"html","\u003Cstyle>\n  body { font-family: sans-serif; }\n  .t { display: inline-block; width: 110px; height: 90px; margin: 6px; border-radius: 10px; color: #fff; font-size: 12px; padding: 6px; background: conic-gradient(from 90deg, #ef4444, #f59e0b, #22c55e, #3b82f6, #a855f7, #ef4444); }\n\u003C\u002Fstyle>\n\u003Cdiv class='t'>original\u003C\u002Fdiv>\n\u003Cdiv class='t' style='filter: blur(3px)'>blur(3px)\u003C\u002Fdiv>\n\u003Cdiv class='t' style='filter: grayscale(1)'>grayscale(1)\u003C\u002Fdiv>\n\u003Cdiv class='t' style='filter: sepia(.9)'>sepia(.9)\u003C\u002Fdiv>\n\u003Cdiv class='t' style='filter: hue-rotate(90deg)'>hue-rotate(90deg)\u003C\u002Fdiv>\n\u003Cdiv class='t' style='filter: saturate(2) brightness(1.1)'>saturate + brightness\u003C\u002Fdiv>\n\u003Cdiv class='t' style='filter: invert(1)'>invert(1)\u003C\u002Fdiv>\n\u003Cdiv class='t' style='filter: contrast(2)'>contrast(2)\u003C\u002Fdiv>",true,{"id":509,"language":505,"code":510,"is_editable":507},285,"\u003Cstyle>\n  .img { width: 220px; height: 150px; border-radius: 12px; background: conic-gradient(from 45deg, #f43f5e, #f59e0b, #10b981, #3b82f6, #f43f5e); filter: grayscale(1) brightness(.9); transition: filter .4s, transform .4s; margin: 10px; display: inline-block; }\n  .img:hover { filter: grayscale(0) brightness(1.05); transform: scale(1.03); }\n  .disabled { display: inline-block; padding: 10px 20px; background: #2563eb; color: #fff; border-radius: 8px; font-family: sans-serif; filter: grayscale(1) opacity(.5); }\n\u003C\u002Fstyle>\n\u003Cdiv class='img'>\u003C\u002Fdiv>\u003Cspan class='disabled'>Disabled button\u003C\u002Fspan>\n\u003Cp style='font-family:sans-serif'>Hover the box to bring the color back.\u003C\u002Fp>",{"id":512,"language":505,"code":513,"is_editable":507},286,"\u003Cstyle>\n  body { margin: 0; font-family: sans-serif; }\n  .scene { min-height: 300px; display: grid; place-items: center; padding: 24px; background: radial-gradient(circle at 20% 25%, #f472b6 0 90px, transparent 91px), radial-gradient(circle at 80% 70%, #22d3ee 0 110px, transparent 111px), linear-gradient(135deg, #4f46e5, #7c3aed); }\n  .glass { width: 280px; padding: 24px; color: #fff; background: rgb(255 255 255 \u002F 15%); -webkit-backdrop-filter: blur(14px) saturate(160%); backdrop-filter: blur(14px) saturate(160%); border: 1px solid rgb(255 255 255 \u002F 30%); border-radius: 18px; box-shadow: 0 8px 32px rgb(0 0 0 \u002F 25%); }\n  .glass h3 { margin: 0 0 8px; }\n\u003C\u002Fstyle>\n\u003Cdiv class='scene'>\u003Cdiv class='glass'>\u003Ch3>Glassmorphism\u003C\u002Fh3>\u003Cp>Frosted glass card with backdrop-filter, a translucent background and a thin light border.\u003C\u002Fp>\u003C\u002Fdiv>\u003C\u002Fdiv>",{"id":515,"language":505,"code":516,"is_editable":507},287,"\u003Cstyle>\n  body { margin: 0; font-family: sans-serif; height: 260px; overflow: auto; background: linear-gradient(180deg, #fde68a, #f472b6, #60a5fa, #34d399); }\n  nav { position: sticky; top: 0; display: flex; gap: 18px; padding: 14px 20px; background: rgb(255 255 255 \u002F 30%); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); border-bottom: 1px solid rgb(255 255 255 \u002F 40%); }\n  nav a { color: #0f172a; text-decoration: none; font-weight: bold; }\n  .blob { height: 90px; margin: 18px; border-radius: 16px; background: rgb(15 23 42 \u002F 70%); }\n\u003C\u002Fstyle>\n\u003Cnav>\u003Ca href='#'>Home\u003C\u002Fa>\u003Ca href='#'>Courses\u003C\u002Fa>\u003Ca href='#'>Contact\u003C\u002Fa>\u003C\u002Fnav>\n\u003Cdiv class='blob'>\u003C\u002Fdiv>\u003Cdiv class='blob'>\u003C\u002Fdiv>\u003Cdiv class='blob'>\u003C\u002Fdiv>\u003Cdiv class='blob'>\u003C\u002Fdiv>\n\u003Cp style='padding:0 20px'>Scroll: the sticky nav blurs the content moving under it.\u003C\u002Fp>",{"id":518,"language":505,"code":519,"is_editable":507},288,"\u003Cstyle>\n  body { font-family: sans-serif; padding: 24px; }\n  .tri { width: 120px; height: 110px; background: #f59e0b; clip-path: polygon(50% 0, 100% 100%, 0 100%); }\n  .wrap { display: inline-block; margin: 20px; }\n  .box-sh .tri { box-shadow: 0 10px 14px rgb(0 0 0 \u002F 50%); }\n  .drop { filter: drop-shadow(0 10px 8px rgb(0 0 0 \u002F 50%)); }\n  .glass-fb { margin-top: 16px; padding: 16px; border-radius: 12px; background: rgb(15 23 42 \u002F 90%); color: #fff; }\n  @supports (backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px)) { .glass-fb { background: rgb(15 23 42 \u002F 40%); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); } }\n\u003C\u002Fstyle>\n\u003Cdiv class='wrap box-sh'>\u003Cdiv class='tri'>\u003C\u002Fdiv>\u003C\u002Fdiv> box-shadow is clipped away\n\u003Cdiv class='wrap drop'>\u003Cdiv class='tri'>\u003C\u002Fdiv>\u003C\u002Fdiv> drop-shadow follows the shape\n\u003Cdiv class='glass-fb'>@supports fallback: solid tint if backdrop-filter is unsupported\u003C\u002Fdiv>",{"id":210,"slug":521,"title":522,"time_limit_seconds":5,"pass_percentage":303,"question_count":39},"filters-glassmorphism-quiz","Filters & Glassmorphism Quiz",[524,531],{"id":525,"title":526,"slug":527,"prompt":528,"starter_code":529,"expected_output":530,"language":505,"order_index":9},117,"Build a Glassmorphism Card","build-glassmorphism-card","Style .glass so it looks like frosted glass: translucent white background (about 15%), backdrop-filter blur of 12px with the -webkit- prefix, a 1px semi-transparent white border, 16px radius and a soft shadow. The card sits over a colorful gradient background.","\u003Cstyle>\n  .scene { min-height: 260px; display: grid; place-items: center; background: linear-gradient(135deg, #ec4899, #6366f1, #06b6d4); }\n  .glass { padding: 24px; color: #fff; font-family: sans-serif; \u002F* your code *\u002F }\n\u003C\u002Fstyle>\n\u003Cdiv class='scene'>\u003Cdiv class='glass'>Frosted glass card\u003C\u002Fdiv>\u003C\u002Fdiv>","A translucent, blurred card with a light border over the colorful background.",{"id":532,"title":533,"slug":534,"prompt":535,"starter_code":536,"expected_output":537,"language":505,"order_index":23},118,"Grayscale Image Gallery Hover","grayscale-gallery-hover","Make every .thumb grayscale by default. On hover, remove the grayscale, slightly increase brightness and add a smooth 0.3s transition.","\u003Cstyle>\n  .thumb { display: inline-block; width: 140px; height: 100px; margin: 8px; border-radius: 10px; background: linear-gradient(135deg, #f43f5e, #f59e0b, #22c55e); \u002F* your code *\u002F }\n  .thumb:hover { \u002F* your code *\u002F }\n\u003C\u002Fstyle>\n\u003Cdiv class='thumb'>\u003C\u002Fdiv>\u003Cdiv class='thumb'>\u003C\u002Fdiv>\u003Cdiv class='thumb'>\u003C\u002Fdiv>","Gray thumbnails that turn colorful and brighter on hover.","2026-09-29T18:57:10+00:00",{"id":391,"slug":393,"title":392},{"data":541},[542,545,548,553,558],{"name":335,"slug":336,"description":543,"post_count":23,"subcategories":544},"Learn CSS with practical tutorials and examples covering layouts, Flexbox, Grid, responsive design, typography, positioning, animations, and more.",[],{"name":10,"slug":505,"description":546,"post_count":23,"subcategories":547},"Learn HTML with practical tutorials and examples for beginners. Explore HTML tags, elements, attributes, links, images, forms, semantic HTML, and more with clear explanations and real code examples.",[],{"name":549,"slug":550,"description":551,"post_count":9,"subcategories":552},"WPF","wpf","Learn WPF with practical tutorials and examples covering XAML, windows, controls, layouts, data binding, MVVM, commands, styles, templates, debugging, and modern WPF UI development.",[],{"name":554,"slug":555,"description":556,"post_count":9,"subcategories":557},"Python","python","Learn Python with practical tutorials covering strings, lists, functions, exceptions, files, packages, virtual environments, modules, classes, and beginner programming concepts.",[],{"name":559,"slug":560,"description":561,"post_count":9,"subcategories":562},"Java","java","Learn Java with practical tutorials and examples for beginners. Explore Java syntax, variables, data types, classes, objects, methods, inheritance, exceptions, collections, and more with clear explanations and real code examples.",[]]