// reset & normalize
* {
  text-decoration: none;
}

html {
  font-size: 62.5%; // 62.5% = 1rem = 10px
  padding: 3rem;
  color: #614f38;
}

body {
  font-size: 1.6rem;
}

// Start!
.btn {
  display: inline-block;
  border: 2px solid;
  position: relative;
  background: #fff;
  color: #614f38;
  border: 1px solid #614f38;
  padding: 1.2rem 2.5rem 1.2rem 2.5rem;
  transition: all .3s;

  &:before,
  &:after {
    content: "";
    position: absolute;
    display: block;
    transition: all .3s;


  }

  &:before {
    opacity: 0;
    width: 7px;
    height: 7px;
    top: 50%;
    right: 1.4rem;
    border-top: solid 2px #614f38;
    border-right: solid 2px #614f38;
    transform: translateY(-50%) rotate(45deg);


  }

  &:after {
    opacity: 0;
    right: -2px;
    bottom: -2px;
    background: #614f38;
    z-index: -1;
    width: 0;
    height: 0;

  }

  &:hover {
    padding: 1.2rem 3.5rem 1.2rem 1.5rem;

    &:before {
      opacity: 1;
      border-color: #614f38;
    }

    &:after {
      opacity: 1;
      width: calc(100% + 2px);
      height: calc(100% + 2px);

    }
  }
}