a.btn--yellow {
color: #000;
  background-color: #fff100;
}

a.btn--yellow:hover {
  color: #000;
  background: #fff20a;
}

a.btn--yellow.btn--cubic {
  border-bottom: 5px solid #ccc100;
}

a.btn--yellow.btn--cubic:hover {
  margin-top: 3px;
  border-bottom: 2px solid #ccc100;
}

a.btn-c {
  font-size: 1.8rem;
  position: relative;
  padding: 2rem 5rem 2rem 3rem;
  border-radius: 100vh;
}


.btn-copy {
  font-size: 1.5rem;
  font-weight: bold;

  position: relative;

  margin-bottom: .2em;

  text-align: center;
}

.btn-copy:before {
  margin-right: 1rem;

  content: '＼';
}

.btn-copy:after {
  margin-left: 1rem;

  content: '／';
}