a {
color: #333333;
text-decoration: none;
position: relative;
}
a:before {
content: "";
background-color: rgba(22, 144, 179, 0.2);
width: 100%;
height: 5px;
position: absolute;
bottom: -10px;
left: 0;
visibility: hidden;
-webkit-transform: scaleX(0);
transform: scaleX(0);
-webkit-transition: all 0.3s ease-in-out 0s;
transition: all 0.3s ease-in-out 0s;
}
a:hover {
color: #137e9c;
text-decoration: none;
}
a:hover:before {
visibility: visible;
-webkit-transform: scaleX(1);
transform: scaleX(1);
}