.pre {
margin: 12px 0;
padding: 12px 20px;
background: #fff;
box-shadow: 0 1px 2px -2px rgba(0, 0, 0, 0.16),
0 3px 6px 0 rgba(0, 0, 0, 0.12), 0 5px 12px 4px rgba(0, 0, 0, 0.09);
}