div.mw-geshi {
 padding: 1em;
 border: 1px dashed #2f6fab;
 color: black;
 background-color: #f9f9f9;
 line-height: 1.1em;
}
 
div.mw-geshi pre {
 border: none;
 background-color: transparent;
 margin: 0;
 padding: 0;
}