:root{
--black:#000;
--white:#fff;
--background:#e8e8e8;
}
.demo{ background: var(--background); }
.link{
color: var(--black);
background: var(--white);
font-family: "REM", sans-serif;
font-size: 18px;
font-weight: 500;
padding: 12px 20px;
text-transform: capitalize;
border-radius: 50px;
display: inline-block;
position: relative;
transition: all 0.3s ease 0s;
}
.link:hover,
.link:focus{
color: var(--white);
background: #073b4c;
box-shadow: inset 0 0 0 4px #ef476f,inset 0 0 0 8px #ffd166,
inset 0 0 0 12px #06d6a0,inset 0 0 0 16px #118ab2;
}
@media only screen and (max-width: 767px){
.link{ margin-bottom: 30px; }
}