*{
    margin:0;
    padding:0;
}
body{
    -webkit-user-select: none;
    -moz-user-select: none;
    -o-user-select: none;
    user-select: none;
    background-image: url(../images/background.png);
    box-sizing: border-box;
    position: absolute;
    width: 100%;
    height: 100%;
    /* border: 3px solid #fff; */
    box-shadow: inset 0 0 50px green;
}
.indexMainBox{
    width:600px;
    height:288px;
    position: absolute;
    top:50%;
    left:50%;
    margin-top:-144px;
    margin-left:-300px;
    text-align: center;
}
#btns>a{
    display:inline-block;
    margin-bottom:50px;
    width:150px;
    height:60px;
    background-color: transparent;
    color:green;
    /* border:1px solid rgba(255,255,255,.5); */
    border:1px solid green;
    border-radius: 5px;
    outline: none;
    text-align: center;
    line-height: 60px;
    font-size:24px;
    text-decoration: none;
    cursor:pointer;
}
#btns>a:last-child{
    margin-bottom:0;
}
#btns>a:nth-child(4){
    margin-left:50px;
    margin-right:50px;
}
.blogBtn{
    position:fixed;
    top:32px;
    left:32px;
    color:#999;
    font-size:24px;
    text-decoration: none;
    cursor:pointer;
}