Анимированная неоновая рамка вокруг блока на CSS3
Классный эффект неоновой анимированной подсветки для любых блоков. Смотрится очень стильно и элегантно
Для начала посмотрите ДЕМО
Установка:
1#: В самый низ вашего CSS вставьте:
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@property --hue { syntax: "<number>"; inherits: true; initial-value: 0; } @property --rotate { syntax: "<number>"; inherits: true; initial-value: 0; } @property --bg-y { syntax: "<number>"; inherits: true; initial-value: 0; } @property --bg-x { syntax: "<number>"; inherits: true; initial-value: 0; } @property --glow-translate-y { syntax: "<number>"; inherits: true; initial-value: 0; } @property --bg-size { syntax: "<number>"; inherits: true; initial-value: 0; } @property --glow-opacity { syntax: "<number>"; inherits: true; initial-value: 0; } @property --glow-blur { syntax: "<number>"; inherits: true; initial-value: 0; } @property --glow-scale { syntax: "<number>"; inherits: true; initial-value: 2; } @property --glow-radius { syntax: "<number>"; inherits: true; initial-value: 2; } @property --white-shadow { syntax: "<number>"; inherits: true; initial-value: 0; } :root { --debug: 0; --supported: 0; --not-supported: 0; --card-color: hsl(260deg 100% 3%); --text-color: hsl(260deg 10% 55%); --card-radius: 3.6vw; --card-width: 35vw; --border-width: 3px; --bg-size: 1; --hue: 0; --hue-speed: 1; --rotate: 0; --animation-speed: 4s; --interaction-speed: 0.55s; --glow-scale: 1.5; --scale-factor: 1; --glow-blur: 6; --glow-opacity: 1; --glow-radius: 100; --glow-rotate-unit: 1deg; } body::before, body::after { content: "CSS.registerProperty is supported ✅"; position: absolute; display: block; top: 8px; left: 0; right: 0; margin: auto; width: calc(100% - 160px); max-width: 380px; height: auto; padding: 8px; border-radius: 8px; background: #48b93c; color: white; text-align: center; font-family: sans-serif; z-index: var(--supported, 0); opacity: var(--supported, 0); } body::after { content: "CSS.registerProperty is NOT supported ❌"; background: #b93c3c; z-index: var(--not-supported, 0); opacity: var(--not-supported, 0); } body::before, body::after { display: none !important; } *, *:before, *:after { outline: calc(var(--debug) * 1px) red dashed; } body > div { width: var(--card-width); width: min(480px, var(--card-width)); aspect-ratio: 1.5/1; color: white; margin: auto; display: flex; align-items: center; justify-content: center; position: relative; z-index: 2; border-radius: var(--card-radius); cursor: pointer; } body > div:before, body > div:after { content: ""; display: block; position: absolute; width: 100%; height: 100%; border-radius: var(--card-radius); } body > div > div { position: absolute; width: 100%; height: 100%; background: var(--card-color); border-radius: calc(calc(var(--card-radius) * 0.9)); display: flex; align-items: center; justify-content: center; font-weight: 800; text-transform: uppercase; font-stretch: 150%; font-size: 18px; font-size: clamp(1.5vw, 1.5vmin, 32px); color: var(--text-color); padding: calc(var(--card-width) / 8); } body > div > div span { display: inline-block; padding: 0.25em; border-radius: 4px; background: var(--text-color); color: black; margin-right: 8px; font-weight: 900; } body > div > div:before { content: ""; display: block; position: absolute; width: 100%; height: 100%; border-radius: calc(calc(var(--card-radius) * 0.9)); box-shadow: 0 0 20px black; mix-blend-mode: color-burn; z-index: -1; background: #292929 radial-gradient(30% 30% at calc(var(--bg-x) * 1%) calc(var(--bg-y) * 1%), hsl(calc(calc(var(--hue) * var(--hue-speed)) * 1deg), 100%, 90%) calc(0% * var(--bg-size)), hsl(calc(calc(var(--hue) * var(--hue-speed)) * 1deg), 100%, 80%) calc(20% * var(--bg-size)), hsl(calc(calc(var(--hue) * var(--hue-speed)) * 1deg), 100%, 60%) calc(40% * var(--bg-size)), transparent 100%); width: calc(100% + var(--border-width)); height: calc(100% + var(--border-width)); animation: hue-animation var(--animation-speed) linear infinite, rotate-bg var(--animation-speed) linear infinite; transition: --bg-size var(--interaction-speed) ease; } body > div .glow { --glow-translate-y: 0; display: block; position: absolute; width: calc(var(--card-width) / 5); height: calc(var(--card-width) / 5); animation: rotate var(--animation-speed) linear infinite; transform: rotateZ(calc(var(--rotate) * var(--glow-rotate-unit))); transform-origin: center; border-radius: calc(var(--glow-radius) * 10vw); } body > div .glow:after { content: ""; display: block; z-index: -2; filter: blur(calc(var(--glow-blur) * 10px)); width: 130%; height: 130%; left: -15%; top: -15%; background: hsl(calc(calc(var(--hue) * var(--hue-speed)) * 1deg), 100%, 60%); position: relative; border-radius: calc(var(--glow-radius) * 10vw); animation: hue-animation var(--animation-speed) linear infinite; transform: scaleY(calc(var(--glow-scale) * var(--scale-factor) / 1.1)) scaleX(calc(var(--glow-scale) * var(--scale-factor) * 1.2)) translateY(calc(var(--glow-translate-y) * 1%)); opacity: var(--glow-opacity); } @keyframes shadow-pulse { 0%, 24%, 46%, 73%, 96% { --white-shadow: 0.5; } 12%, 28%, 41%, 63%, 75%, 82%, 98% { --white-shadow: 2.5; } 6%, 32%, 57% { --white-shadow: 1.3; } 18%, 52%, 88% { --white-shadow: 3.5; } } @keyframes rotate-bg { 0% { --bg-x: 0; --bg-y: 0; } 25% { --bg-x: 100; --bg-y: 0; } 50% { --bg-x: 100; --bg-y: 100; } 75% { --bg-x: 0; --bg-y: 100; } 100% { --bg-x: 0; --bg-y: 0; } } @keyframes rotate { from { --rotate: -70; --glow-translate-y: -65; } 25% { --glow-translate-y: -65; } 50% { --glow-translate-y: -65; } 60%, 75% { --glow-translate-y: -65; } 85% { --glow-translate-y: -65; } to { --rotate: calc(360 - 70); --glow-translate-y: -65; } } @keyframes hue-animation { 0% { --hue: 0; } 100% { --hue: 360; } } |
2#: Следующий код поместите после открывающего тега <body>:
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<div role="button"> <span class="glow"></span> <div></div> </div> |
