select2/docs/_sass/_examples.scss

.s2-example + pre,
.s2-event-log + pre {
  margin: -15px -15px 15px;
  border-radius: 0;
  border-width: 0 0 1px;
}

@media (min-width: 768px) {
	.s2-example + pre,
	.s2-event-log + pre {
	  margin-top: -16px;
	  margin-left: 0;
	  margin-right: 0;
	  border-width: 1px;
	  border-bottom-left-radius: 4px;
	  border-bottom-right-radius: 4px;
	}
}

.s2-event-log {
  background: #002451;
  font-family: Menlo, 'Bitstream Vera Sans Mono', 'DejaVu Sans Mono', Monaco, Consolas, monospace;
	color: white;
	position: relative;
	padding: 45px 15px 15px;
  	margin: 0 -15px 15px;
}

.s2-event-log:after {
  content: "Event Log";
  position: absolute;
  top: 15px;
  left: 15px;
  font-size: 12px;
  font-weight: bold;
  color: #BBB;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.s2-example {
  position: relative;
  padding: 45px 15px 15px;
  margin: 0 -15px 15px;
  background-color: #FAFAFA;
  box-shadow: inset 0 3px 6px rgba(0, 0, 0, 0.05);
  border-color: #E5E5E5 #EEE #EEE;
  border-style: solid;
  border-width: 1px 0;
}

@media (min-width: 768px) {
	.s2-example {
	  margin-left: 0;
	  margin-right: 0;
	  background-color: #FFF;
	  border-width: 1px;
	  border-color: #eee;
	  border-radius: 4px 4px 0 0;
	  box-shadow: none;
	}

	.s2-event-log {
	  margin-left: 0;
	  margin-right: 0;
	  margin-top: -15px;
	  border-width: 1px;
	  border-color: #eee;
	  box-shadow: none;
	}
}

.s2-example:after {
  content: "Example";
  position: absolute;
  top: 15px;
  left: 15px;
  font-size: 12px;
  font-weight: bold;
  color: #BBB;
  text-transform: uppercase;
  letter-spacing: 1px;
}