Psuedo Element + Background Gradient Animation + Blur = Badass
A Pen by George Hastings on CodePen.
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Animated Back Glow
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| <div>BACKLIGHT</div> |
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| *{box-sizing: border-box;} | |
| html, | |
| body { | |
| margin: 0 auto; | |
| height: 100%; | |
| } | |
| body { | |
| display: flex; | |
| align-items: center; | |
| font-family: monospace; | |
| justify-content: center; | |
| background-color:darken(#252B37, 4%); | |
| } | |
| @mixin backlight($x, $y, $spread, $size, $colorA, $colorB, $duration) { | |
| &:after { | |
| position: absolute; | |
| content: ""; | |
| top: $y; | |
| left: $x; | |
| right: 0; | |
| z-index: -1; | |
| height: 100%; | |
| width: 100%; | |
| margin: 0 auto; | |
| transform: scale($size); | |
| -webkit-filter: blur($spread); | |
| background: linear-gradient(270deg, $colorA, $colorB); | |
| background-size: 200% 200%; | |
| animation: animateGlow $duration ease infinite; | |
| @keyframes animateGlow { | |
| 0%{background-position:0% 50%} | |
| 50%{background-position:100% 50%} | |
| 100%{background-position:0% 50%} | |
| } | |
| } | |
| } | |
| div { | |
| position: relative; | |
| width: 30vw; | |
| height: 30vw; | |
| line-height: 30vw; | |
| text-align: center; | |
| color: #252B37; | |
| background-color: #151823; | |
| animation: textColor 10s ease infinite; | |
| @include backlight(0, 5vw, 5vw, 0.75, #0fffc1, #7e0fff, 10s); | |
| @keyframes textColor { | |
| 0% { | |
| color: #7e0fff; | |
| } | |
| 50% { | |
| color: #0fffc1; | |
| } | |
| 100% { | |
| color: #7e0fff; | |
| } | |
| } | |
| } |
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