h2{
color: #fff;
background-color: #103858;
-moz-border-radius: 5px;
border-radius: 5px;
padding: 6px;
margin: 10px 0px;
text-shadow: 2px 2px 3px #404040;
}
#scrollUp {
width: 50px;
height: 50px;
bottom: 20px;
right: 20px;
background: #1f7b9b url(https://images.cnblogs.com/cnblogs_com/twobin/520730/o_icon.png) no-repeat 9px -148px;
color: #fff;
font-size: 14px;
font-weight: bold;
font-family: sans-serif;
text-decoration: none;
opacity: .9;
}