.bs-docs-example {
position: relative;
margin: 15px 0;
padding: 39px 19px 14px;
background-color: #fff;
border: 1px solid #ddd;
-webkit-border-radius: 4px;
-moz-border-radius: 4px;
border-radius: 4px;
}
user agent stylesheetdiv {
display: block;
}
.bs-docs-example:after {
content: "示例";
position: absolute;
top: -1px;
left: -1px;
padding: 3px 7px;
font-size: 12px;
font-weight: bold;
background-color: #f5f5f5;
border: 1px solid #ddd;
color: #9da0a4;
-webkit-border-radius: 4px 0 4px 0;
-moz-border-radius: 4px 0 4px 0;
border-radius: 4px 0 4px 0;
}

.scrollspy-example {
height: 200px;
overflow: auto;
position: relative;
}