按钮动画

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html

css

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html

css

html,
body {
  height: 100%;
}
body {
  background: #1e0f21;
  display: grid;
  font-family: "Roboto Mono";
}
.btn-epic {
  position: relative;
  margin: auto;
  width: 100%;
  max-width: 260px;
  height: 52px;
  background: #fff;
  transform: translate3d(0px, 0%, 0px);
  text-decoration: none;
  font-weight: 600;
  font-size: 18px;
  letter-spacing: 0.05em;
  transition-delay: 0.6s;
  overflow: hidden;
}
.btn-epic:before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #3ad2d0;
  border-radius: 50% 50% 0 0;
  transform: translateY(100%) scaleY(0.5);
  transition: all 0.6s ease;
}
.btn-epic:after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #fff;
  border-radius: 0;
  transform: translateY(0) scaleY(1);
  transition: all 0.6s ease;
}
.btn-epic div {
  position: relative;
  top: 16px;
  width: 100%;
  height: 26px;
  text-transform: uppercase;
  overflow: hidden;
}
.btn-epic span {
  position: absolute;
  z-index: 1;
  top: 0;
  width: 100%;
  text-align: center;
  transition: transform 0.5s ease;
}
.btn-epic span:first-child {
  color: #fff;
  transform: translateY(24px);
}
.btn-epic span:last-child {
  color: #1e0f21;
  transform: translateY(0);
}
.btn-epic:hover {
  background: #3ad2d0;
  transition: background 0.2s linear;
  transition-delay: 0.6s;
}
.btn-epic:hover:after {
  border-radius: 0 0 50% 50%;
  transform: translateY(-100%) scaleY(0.5);
  transition-delay: 0;
}
.btn-epic:hover:before {
  border-radius: 0;
  transform: translateY(0) scaleY(1);
  transition-delay: 0;
}
.btn-epic:hover span:first-child {
  transform: translateY(0);
}
.btn-epic:hover span:last-child {
  transform: translateY(-24px);
}

JavaScript

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