SVG循环动画

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html

css

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html

css

/* Colors */
:root {
  --white: #ffffff;
  --turquoise: #3DBABA;
  --powder-blue:#87AEAF;
  --alice-blue:#D7EFF7;
  --anti-flash-white:#F6F9FD;
  --oxford-blue:#011529;
  --aquamarine: #7FFFD4;
  --payne-gray:#607080;
  --prussian-blue:#082E47;
  --rich-black:#03101C;
  --brand: var(--turquoise);
  --fg:var(--oxford-blue);
  --fg-1:var(--rich-black);
  --fg-2:var(--prussian-blue);
  --dark: var(--oxford-blue);
  --light: var(--white);
  --bg: var(--white);
  --bg-1:var(--alice-blue);
  --bg-2:var(--anti-flash-white);
  --neutral: var(--powder-blue);
  --tone-1: var(--turquoise);
  --tone-2: var(--aquamarine);
}

.fbottom, .ll {
  fill: none;
}

.fbottom {
  stroke-width: inherit;
  stroke: var(--neutral);
  stroke-opacity: 0.3;
}

.ll {
  stroke: var(--brand);
  animation: loop 3s linear infinite;
  stroke-width: 0.35;
  stroke-dasharray: 3 24.5;
  stroke-linecap: round;
}

.finny {
  stroke-width: 1.43;
  animation: rot 36s linear infinite;
}

.shad {
  animation: raise 3s linear infinite;
}

.shad.odd {
  animation-delay: -1.5s;
}

@keyframes raise {
  0%, 20% {
    opacity: 1;
  }
  30%, 70% {
    opacity: 0;
  }
  80%, 100% {
    opacity: 1;
  }
}
.ll {
  animation-delay: -1.5s;
}

.finny {
  perspective: 500px;
}

@keyframes loop {
  0% {
    stroke-dashoffset: 0.5;
  }
  100% {
    stroke-dashoffset: 28;
  }
}
.clip-shadow {
  stroke-linecap: butt;
  fill: none;
  opacity: 0.3;
  stroke-width: inherit;
  stroke: url(#sgrad);
}

#sgrad stop {
  stop-color: var(--bg-3);
}

@media (prefers-color-scheme: light) {
  #sgrad stop {
    stop-color: #2345;
  }
}
/* just for demo */
body {
  background-color: var(--fg);
  display: grid;
  height: 100vh;
  place-content: center;
  width: 100vw;
  overflow: hidden;
  margin: 0;
}

svg {
  width: 90vw;
  height: 70vh;
  display: block;
}

JavaScript

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