Seems to be a component of the Bootstrap framework.
Check out the jsFiddle here
.fancy {
background-color: #fff;
border: 1px solid #ccc;
-webkit-box-shadow: inset 0 1px 1px rgba(0,0,0,0.075);
-moz-box-shadow: inset 0 1px 1px rgba(0,0,0,0.075);
box-shadow: inset 0 1px 1px rgba(0,0,0,0.075);
-webkit-transition: border linear .2s,box-shadow linear .2s;
-moz-transition: border linear .2s,box-shadow linear .2s;
-o-transition: border linear .2s,box-shadow linear .2s;
transition: border linear .2s,box-shadow linear .2s;
display: inline-block;
height: 20px;
padding: 4px 6px;
margin-bottom: 10px;
font-size: 14px;
line-height: 20px;
color: #555;
vertical-align: middle;
-webkit-border-radius: 4px;
-moz-border-radius: 4px;
border-radius: 4px;
}
.fancy:focus {
border-color: rgba(82, 168, 236, 0.8);
outline: 0;
outline: thin dotted 9;
-webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075),0 0 8px rgba(82, 168, 236, 0.6);
-moz-box-shadow: inset 0 1px 1px rgba(0,0,0,0.075),0 0 8px rgba(82,168,236,0.6);
box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075),0 0 8px rgba(82, 168, 236, 0.6);
}