html,body{
    width: 100%;
    height: 100%;
}
#mycontent{
    width: 100%;
    overflow: hidden;
    height: 100%;
    height: calc(100% - 70px);
    height: -ms-calc(100% - 70px);
    height: -moz-calc(100% - 70px);
	height: -webkit-calc(100% - 70px);
	height: -o-calc(100% - 70px);
    position: relative;
}
#reg{
    width: 740px;
    height: 454px;
    box-shadow: 0 8px 13px 0 rgba(7,0,2,0.3);
    -webkit-box-shadow: 0 8px 13px 0 rgba(7,0,2,0.3);
    -ms-box-shadow: 0 8px 13px 0 rgba(7,0,2,0.3);
    -o-box-shadow: 0 8px 13px 0 rgba(7,0,2,0.3);
    -moz-box-shadow: 0 8px 13px 0 rgba(7,0,2,0.3);
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    margin: auto;
}
#reg>p{
    width: 100%;
    height: 44px;
    background: #f2f2f2;
    text-align: center;
    line-height: 44px;
    font-size: 18px;
}
#reg>form>ul{    
    width: 355px;
    margin: 60px auto;
}
#reg>form>ul>li{
    width: 100%;
    height: 35px;
    line-height: 35px;
    position: relative;
}
#reg>form>ul>li>span{
    display: inline-block;
    width: 70px;
    font-size: 14px;
    vertical-align: middle;
}
#reg>form>ul>li>span.errorinfo{
    display: none;
    width: 200px;
    color: #e00;
    margin-left: 75px;
}
#reg>form>ul>li>span+input+span{
    width: 80px;
    height: 28px;
    text-align: center;
    line-height: 30px;
    color: #fff;
    font-size: 14px;
   background: #cb2914;
   background: #cb2914;
    position: absolute;
    right: 3px;
    top: 4px;
    border-radius:0 3px 3px 0;
    cursor: pointer;
}
#reg>form>ul>li>span+input+span:active{
    background: #c91700;
}
#reg>form>ul>li>input{
    width: 276px;
    height: 28px;
    font-size: 12px;
    text-indent: 10px;
    border: 1px solid #a8a8a8;
    border-radius: 3px;
    box-sizing: content-box;
    padding: 0;
}
#reg>form>ul>li>input:focus{
    outline: none;
}
#reg>form>ul>li.btn{
    height: 50px;
    margin-top: 30px;
    text-align: center;
}
#reg>form>ul>li.btn>button{
    outline: none;
    border: none;
    width: 140px;
    height: 50px;
    line-height: 50px;
    text-align: center;
    color: #fff;
    font-size: 16px;
    border-radius: 25px;
    cursor: pointer;
    padding: 0;
    background: #cb2914;
}
#reg>form>ul>li.btn>button:active{
    background: #c91700;
}
@media screen and (max-width:1366px){
    #mycontent{
        height: calc(100% - 50px);
        height: -ms-calc(100% - 50px);
        height: -moz-calc(100% - 50px);
        height: -webkit-calc(100% - 50px);
        height: -o-calc(100% - 50px);
    }
    #reg{
        height: 404px;
    }
    #reg>form>ul{
        margin: 40px auto;
    }
    #reg>form>ul>li.btn{
        margin-top: 20px;
    }
}