CSS按钮特效

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html

css

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html

<div class="galaxy-button">
 <button>
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Explore
 </button>
 <div class="bodydrop"></div>
</div>

css

*,
*:after,
*:before {
  box-sizing: border-box;
}
:root {
  --transition: 0.25s;
  --spark: 1.8s;
  --hue: 245;
}

body {
  --active: 0;
  background: hsl(
    var(--hue)
    calc(var(--active) * 97%)
    6%
  );
  display: grid;
  place-items: center;
  min-height: 100vh;
  font-family: system-ui, sans-serif;
  transition: background var(--transition);
  overflow: hidden;
}

button {
  --cut: 0.1em;
  --active: 0;
  --bg:
    radial-gradient(
      120% 120% at 126% 126%,
      hsl(var(--hue) calc(var(--active) * 97%) 98% / calc(var(--active) * 0.9)) 40%,
      transparent 50%
    ) calc(100px - (var(--active) * 100px)) 0 / 100% 100% no-repeat, 
    radial-gradient(
      120% 120% at 120% 120%,
      hsl(var(--hue) calc(var(--active) * 97%) 70% / calc(var(--active) * 1)) 30%,
      transparent 70%
    ) calc(100px - (var(--active) * 100px)) 0 / 100% 100% no-repeat,
    hsl(var(--hue) calc(var(--active) * 100%) calc(12% - (var(--active) * 8%)));
  background: var(--bg);
  font-size: 2rem;
  font-weight: 500;
  border: 0;
  cursor: pointer;
  padding: 0.9em 1.3em;
  display: flex;
  align-items: center;
  gap: 0.25em;
  white-space: nowrap;
  border-radius: 2rem;
  position: relative;
  box-shadow:
    0 0 calc(var(--active) * 6em) calc(var(--active) * 3em) hsl(var(--hue) 97% 61% / 0.5),
    0 0.05em 0 0 hsl(var(--hue) calc(var(--active) * 97%) calc((var(--active) * 50%) + 30%)) inset,
    0 -0.05em 0 0 hsl(var(--hue) calc(var(--active) * 97%) calc(var(--active) * 10%)) inset;
  transition: box-shadow var(--transition), scale var(--transition), background var(--transition);
  scale: calc(1 + (var(--active) * 0.1));
  transform-style: preserve-3d;
  perspective: 100vmin;
  overflow: hidden;
}

button:active {
  scale: 1;
}

.star {
  height: calc(var(--size) * 1px);
  aspect-ratio: 1;
  background: white;
  border-radius: 50%;
/*  filter: blur(4px);*/
  position: absolute;
  opacity: var(--alpha);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) rotate(10deg) rotate(0deg) translateY(calc(var(--distance) * 1px)) ;
  animation: orbit calc(var(--duration) * 1s) calc(var(--delay) * -1s) infinite linear;
}

@keyframes orbit {
  to {
    transform: translate(-50%, -50%) rotate(10deg) rotate(360deg) translateY(calc(var(--distance) * 1px));
  }
}

.galaxy {
  position: absolute;
  width: 100%;
  aspect-ratio: 1;
  top: 50%;
  left: 50%;
  translate: -50% -50%;
  overflow: hidden;
  opacity: var(--active);
  transition: opacity var(--transition);
  /*transform-style: preserve-3d;
  perspective: 100vmin;*/
/*  opacity: 0.25;*/
}

.galaxy__ring {
  height: 200%;
  width: 200%;
  position: absolute;
  top: 50%;
  left: 50%;
  border-radius: 50%;
  transform: translate(-28%, -40%) rotateX(-24deg) rotateY(-30deg) rotateX(90deg);
  transform-style: preserve-3d;
/*  background: red;*/
}

.galaxy__container {
  position: absolute;
  inset: 0;
  opacity: var(--active);
  transition: opacity var(--transition);
  mask: radial-gradient(white, transparent);
}

.star--static {
  animation: none;
  top: 50%;
  left: 50%;
  transform: translate(0, 0);
  max-height: 4px;
  filter: brightness(4);
  opacity: 0.9;
  animation:
    move-x calc(var(--duration) * 0.1s) calc(var(--delay) * -0.1s) infinite linear,
    move-y calc(var(--duration) * 0.2s) calc(var(--delay) * -0.2s) infinite linear;
}

button:hover .star--static {
  animation-play-state: paused;
}

@keyframes move-x {
  0% {
    translate: -100px 0;
  }
  100% {
    translate: 100px 0;
  }
}

@keyframes move-y {
  0% {
    transform: translate(0, -50px);
  }
  100% {
    transform: translate(0, 50px);
  }
}

.spark {
  position: absolute;
  inset: 0;
  border-radius: 2rem;
  rotate: 0deg;
  overflow: hidden;
  mask: linear-gradient(white, transparent 50%);
  animation: flip calc(var(--spark) * 2) infinite steps(2, end);
}

@keyframes flip {
  to {
    rotate: 360deg;
  }
}

.spark:before {
  content: "";
  position: absolute;
  width: 200%;
  aspect-ratio: 1;
  top: 0%;
  left: 50%;
  z-index: -1;
  translate: -50% -15%;
  rotate: 0;
  transform: rotate(-90deg);
  opacity: calc((var(--active)) + 0.4);
  background: conic-gradient(
    from 0deg,
    transparent 0 340deg,
    white 360deg
  );
  transition: opacity var(--transition);
  animation: rotate var(--spark) linear infinite both;
}

.spark:after {
  content: "";
  position: absolute;
  inset: var(--cut);
  border-radius: 2rem;
}

.backdrop {
  position: absolute;
  inset: var(--cut);
  background: var(--bg);
  border-radius: 2rem;
  transition: background var(--transition);
}

@keyframes rotate {
  to {
    transform: rotate(90deg);
  }
}

@supports(selector(:has(:is(+ *)))) {
  body:has(button:is(:hover, :focus-visible)) {
    --active: 1;
    --play-state: running;
  }
  .bodydrop {
    display: none;
  }
}

button:is(:hover, :focus-visible) ~ :is(.bodydrop, .particle-pen) {
  --active: 1;
  --play-state: running;
}

.bodydrop {
  background: hsl(
    260
    calc(var(--active) * 97%)
    6%
  );
  position: fixed;
  inset: 0;
  z-index: -1
}

button:is(:hover, :focus-visible) {
  --active: 1;
  --play-state: running;
}

.galaxy-button {
  position: relative;
}

@keyframes float-out {
  to {
    rotate: 360deg;
  }
}

.text {
  translate: 2% -6%;
  letter-spacing: 0.01ch;
  /*background: linear-gradient(90deg, hsl(0 0% calc((var(--active) * 100%) + 65%)), hsl(0 0% calc((var(--active) * 100%) + 26%)));
  -webkit-background-clip: text;*/
  color: hsl(0 0% calc(60% + (var(--active) * 26%)));
}

button svg {
  inline-size: 1.25em;
  translate: -25% -5%;
}

JavaScript

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