.btn a {
    background: #ddd;
    border-radius: 3px;
    position: relative;

    justify-content: space-around;
    align-items: center;
    margin: 0 auto;
    width: 120px;
    padding: 10px 15px;
    color: #313131;
    transition: 0.3s ease-in-out;
}

.btn a:hover {
  background: #666666;
  color: #eeeeee;
}