galaxy/Buttons/doniaskima_swift-newt-52.html

<button class="btn-96"><span>Button</span></button>

<style>
/* From Uiverse.io by doniaskima - Tags: bounce animation, 3d button */
.btn-96,
.btn-96 *,
.btn-96 :after,
.btn-96 :before,
.btn-96:after,
.btn-96:before {
  border: 0 solid;
  box-sizing: border-box;
}

.btn-96 {
  -webkit-tap-highlight-color: transparent;
  -webkit-appearance: button;
  background-color: #000;
  background-image: none;
  color: #fff;
  cursor: pointer;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    Segoe UI, Roboto, Helvetica Neue, Arial, Noto Sans, sans-serif,
    Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol, Noto Color Emoji;
  font-size: 100%;
  line-height: 1.5;
  margin: 0;
  -webkit-mask-image: -webkit-radial-gradient(#000, #fff);
  padding: 0;
}

.btn-96:disabled {
  cursor: default;
}

.btn-96:-moz-focusring {
  outline: auto;
}

.btn-96 svg {
  display: block;
  vertical-align: middle;
}

.btn-96 [hidden] {
  display: none;
}

.btn-96 {
  box-sizing: border-box;
  display: block;
  font-weight: 900;
  -webkit-mask-image: none;
  padding: 2rem 5rem;
  perspective: 800px;
  position: relative;
  text-transform: uppercase;
  transform-style: preserve-3d;
}

.btn-96 span {
  background: #fff;
  color: #000;
  display: grid;
  inset: 0;
  place-items: center;
  position: absolute;
  transform: rotateX(0deg);
  transform-origin: top center;
  transition: 0.2s;
}

.btn-96:hover span {
  transform: rotateX(35deg);
}

.btn-96:after,
.btn-96:before {
  background: #ddd;
  content: "";
  height: 100%;
  left: 0;
  position: absolute;
  top: 0;
  transform: rotateX(0deg);
  width: 100%;
  z-index: -1;
}

.btn-96:after {
  background: #ccc;
  width: 0;
}

.btn-96:hover:after {
  -webkit-animation: progress-bar 1.2s;
  animation: progress-bar 1.2s;
}

@-webkit-keyframes progress-bar {
  0% {
    opacity: 1;
    width: 0;
  }

  10% {
    opacity: 1;
    width: 15%;
  }

  25% {
    opacity: 1;
    width: 25%;
  }

  40% {
    opacity: 1;
    width: 35%;
  }

  55% {
    opacity: 1;
    width: 75%;
  }

  60% {
    opacity: 1;
    width: 100%;
  }

  to {
    opacity: 0;
    width: 100%;
  }
}

@keyframes progress-bar {
  0% {
    opacity: 1;
    width: 0;
  }

  10% {
    opacity: 1;
    width: 15%;
  }

  25% {
    opacity: 1;
    width: 25%;
  }

  40% {
    opacity: 1;
    width: 35%;
  }

  55% {
    opacity: 1;
    width: 75%;
  }

  60% {
    opacity: 1;
    width: 100%;
  }

  to {
    opacity: 0;
    width: 100%;
  }
}

</style>