个人设置中

自定义 CSS：

.cell .fr a[href="#"] {
width: 60px;
height: 40px;
line-height: 35px;
border-radius: 3px;
background: gray;
display: block;
text-align: center;
position: fixed;
bottom: 200px;
left: 50%;
margin-left: 260px;
text-decoration: none;
box-shadow: 1px 1px 2px #777;
}
.cell .fr a[href="#"] strong {
font-size: 25px;
color: white;

display: block;
}