JSFiddle - React, Tailwind, and code Playground

by rogeriolino

HTML

<button type="button" class="rounded-btn">Iniciar tour</button>

CSS

body {
  background: #216B5B;
}

button.rounded-btn {
  text-transform: uppercase;
  text-align: center;
  font-weight: bold;
  padding: 18px 30px;
  border-width: 2px;
  border-style: solid;
  position: relative;
  background: transparent;
  border-radius: 30px;
}

button.rounded-btn::before {
  content: " ";
  position: absolute;
  border-radius: 25px;
  border-width: 2px;
  border-style: dotted;
  top: 2px;
  left: 2px;
  right: 2px;
  bottom: 2px;
}

button.rounded-btn,
button.rounded-btn::before {
  color: #fff;
  border-color: #fff;
}

button.rounded-btn:hover {
  animation: blink .5s infinite;
}

button.rounded-btn:hover::before {
  animation: pulse .5s infinite;
}

@keyframes pulse {
  0% {
    top: 2px;
    left: 2px;
    right: 2px;
    bottom: 2px;
  }
  50% {
    top: 4px;
    left: 4px;
    right: 4px;
    bottom: 4px;
  }
}

@keyframes blink {
  50% {
    border-color: red;
  }
}