<a href="#" class="btn">Click Click Click!</a>
// reset & normalize
*{text-decoration:none;}
html{
  font-size:62.5%; // 62.5% = 1rem = 10px
    padding: 3rem;
  color: #614f38;
}
body {
  font-size:1.6rem;
}
// Start!
a.btn {
  position: relative;
  text-decoration: none;
  transition: .15s ease-out;
  -webkit-transform: translateZ(0);
  display: inline-block;
  box-sizing: border-box;
  border: 1px solid;
  border-radius: 3rem;
  padding: 1.2rem 5rem 1.2rem 3rem;
  color: inherit;
  text-align: center;
  line-height: 1;
  box-shadow: 0 2px 0 #614f38;
  text-decoration: none;
  // arrow
  &:before,
  &:after {
    position: absolute;
    top: 0;
    bottom: 0;
    right: 0;
    margin: auto;
    content: "";
    vertical-align: middle;
  }
  &:before {
    right: 2rem;
    width: .7rem;
    height: 1px;
    background: #614f38;
  }
  &:after {
    right: 20px;
    width: 6px;
    height: 6px;
    border-top: 1px solid #614f38;
    border-right: 1px solid #614f38;
    transform: rotate(45deg);
  }
  &:hover {
    color:#fff;
    background-color: #614f38;
    transform: translateY(2px);
    box-shadow: 0 0 0 rgba(245, 209, 0, 0.75);
    opacity: 1;
    &:before {
      background-color: #fff;
    }
    &:after {
      border-color: #fff;
    }
  }
}
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