* {
  margin: 0 auto;
  padding: 0;
}

body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: #000822;
}

.container {
  position: relative;
  width: 800px;
}

.container .signature path {
  fill: transparent;
  stroke: #31e8ff;
  stroke-miterlimit: 10;
  stroke-width: 6px;
  stroke-dasharray: 1995;
  stroke-dashoffset: 0;
}

line {
  fill: none;
  stroke: #31e8ff;
  stroke-miterlimit: 10;
  stroke-width: 6px;
  stroke-dasharray: 125;
  stroke-dashoffset: 0;
}

.container .heart {
  animation: animate-signature 4s linear forwards infinite;
}

@keyframes animate-signature {
  0% {
    stroke-dashoffset: 0;
  }
  40% {
    stroke-dashoffset: 1995;
  }
  80% {
    stroke-dashoffset: 3990;
    fill: transparent;
  }
  100% {
    stroke-dashoffset: 3990;
    fill: #31e8ff;
  }
}

.container .letter {
  animation: animate-letter 4s linear forwards infinite;
}

@keyframes animate-letter {
  0% {
    stroke-dashoffset: 0;
  }
  40% {
    stroke-dashoffset: 1995;
  }
  80% {
    stroke-dashoffset: 3990;
  }
  100% {
    stroke-dashoffset: 3990;
  }
}

.container line {
  animation: animate-line 4s linear forwards infinite;
}

@keyframes animate-line {
  0% {
    stroke-dashoffset: 0;
  }
  40% {
    stroke-dashoffset: 125;
  }
  80% {
    stroke-dashoffset: 250;
  }
  100% {
    stroke-dashoffset: 250;
  }
}