a.btn_06 {
display: block;
text-align: center;
vertical-align: middle;
text-decoration: none;
width: 400px;
margin: auto;
padding: 1rem 4rem;
font-weight: bold;
border-radius: 100vh;
border-bottom: 7px solid #0686b2;
background: #27acd9;
color: #fff;
}
a.btn_06:hover {
margin-top: 6px;
border-bottom: 1px solid #0686b2;
color: #fff;
}