body {
background: url(https://html5book.ru/wp-content/uploads/2015/07/background39.png);
}
.floating-button {
text-decoration: none;
display: inline-block;
width: 140px;
height: 45px;
line-height: 45px;
border-radius: 45px;
margin: 10px 20px;
font-family: 'Montserrat', sans-serif;
font-size: 11px;
text-transform: uppercase;
text-align: center;
letter-spacing: 3px;
font-weight: 600;
color: #524f4e;
background: white;
box-shadow: 0 8px 15px rgba(0, 0, 0, .1);
transition: .3s;
}
.floating-button:hover {
background: #2EE59D;
box-shadow: 0 15px 20px rgba(46, 229, 157, .4);
color: white;
transform: translateY(-7px);
}