SOURCE

/*应用首页的界面样式设置都在这*/
/*css reset */
body,p,div,ol,ul,li,dl,dt,dd,h1,h2,h3,h4,h5,h6,form,input,iframe,nav {
    margin: 0;
    padding: 0;
}
html,body {
    width: 100%;
    height: 100%;
}
body {
    font: 14px Microsoft YaHei;
    -webkit-text-size-adjust:100%;
    -moz-user-select: none;
    -webkit-user-select: none;
    user-select: none;
    position: relative;
    background: #000;
}
a { 
    text-decoration: none;
}
ol,ul {
    list-style: none;
}
img { 
    border: 0;
}
.wrapper .btn_w {
    position: absolute;
    margin: auto;
    top: 50%;
    left: 50%;
    margin-top: -22px;
    margin-left: -155px;
    z-index: 10;
}

.wrapper .btn_w .btn {
    background: transparent url(http://ww3.sinaimg.cn/large/bea70753gw1f2g4snrc2cj203m02e3yb.jpg) no-repeat 0 0;
    display: inline-block;
    width: 130px;
    height: 43px;
    margin: 0 10px;
    font: 18px/43px Microsoft YaHei;
    color: #069;
    text-align: center;
    transition: .5s;
}

.wrapper .btn_w .btn:hover {
    background-position: 0 -43px;
    color: #27b;
    box-shadow: 0 0 6px #27b;
}
#canvas {
    width: 100%;
    height: 100%;
    display: block;
    opacity: .8;
}
h1{
    color: white;
    margin-top: -15%;
    margin-bottom: 20%;
    margin-left: -28%;
    font-size: 80px;
    letter-spacing: 10px;
    text-shadow: 5px 5px 5px blue;
}