Extrait de code d'animation CSS Heart

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HTML

CSS

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  background-color: #111;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  overflow: hidden;
}
.codigo {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  background: #272822;
  color: #F8F8F2;
  font-family: 'Consolas', 'Monaco', monospace;
  font-size: 18px;
  padding: 20px;
  border-radius: 8px;
  white-space: pre-line;
  text-align: left;
  line-height: 1.6;
  max-height: 50%;
  width: 100%;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}
.selector       { color: #F92672; } .property       { color: #66D9EF; } .value-number   { color: #AE81FF; } .value-string   { color: #E6DB74; } .value-color    { color: #A6E22E; } .brace          { color: #F8F8F2; } .comment        { color: #75715E; } .function       { color: #A6E22E; }
.animation-container {
  position: absolute;
  top: 75%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 50%;
  overflow: hidden;
  z-index: 1;
}
.heart {
  width: 150px;
  height: 150px;
  position: relative;
  clip-path: polygon(50% 0%, 100% 22%, 75% 88%, 25% 88%, 0% 22%);
  animation: beat 1.5s ease-in-out infinite;
}
.heart::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #f04040, #ed2f2f);
  box-shadow: 0 0 20px #d40000;
  filter: blur(5px);
  animation: glitch 2s linear infinite;
}

@keyframes beat {
  0% {
    transform: scale(1.0);
    opacity: 1;
  }
  50% {
    transform: scale(1.1);
    opacity: 0.8;
  }
  100% {
    transform: scale(1.0);
    opacity: 1;
  }  
}

@keyframes glitch {
  0% {
    transform: rotate(0deg);
  }
  30% {
    filter: blur(0px);
  }
  50% {
    transform: rotate(1deg);
  }
  100% {
    filter: blur(8px);
    transform: rotate(0deg);
  }
}