CSS
html {
background-color: black;
}
.xsfb {
display: block;
width:10%;
margin: 10%;
text-decoration: none;
}
.xsfb--rect {
padding: 15px 20px;
font-size: 11px;
font-weight: 500;
text-transform: uppercase;
text-align: center;
letter-spacing: .15em;
border: 2px solid;
transition: all .1s ease-out;
}
.xsfb--rect--light {
color: #000;
background-color: #fff;
border-color: #fff;
}
