header {
    background: none;
    height: 72px;
}

.content{
    width: 100%;

    padding-top: 80px;
    padding-bottom: 80px;
    background: url("../img/loginbg.JPG") no-repeat   #363e41;
}
.content .login_menu{
    width: 70%;
    height: 350px;
    background: #FFFFFF;
    margin: 0px 15%;
}
.content .login_menu .ad{
    width: 44%;
    padding: 0 5%;
    height: 300px;
    padding-top: 50px;
    float: left;
    border-right: 1px solid #ececec;
}
.content .login_menu .ad img{
    width: 100%;
    height: auto;


}
.content .login_menu .main{
    width: 30%;
    padding: 0 10% 0 5%;
    padding-top: 50px;
    height: 300px;
    float: left;

}
.content .login_menu .main h2{
    font-weight: normal;
    font-size: 1rem;
    padding-left: 5%;

    padding-bottom: 10px;
    border-bottom: 2px solid #ececec;
}
.content .login_menu .main a{
    color: #999999;
    display: block;
}
.content .login_menu .main .login_mess{
    font-size: 0.8rem;
    letter-spacing: 1px;
    text-align: right;
    line-height: 30px;
    width: 100%;
    display: block;

}
.content .login_menu .main a:hover{
    color: #25a3fa;
}
.content .login_menu .main form{
    margin-top: 0px;
    outline: none;
}
.content .login_menu .main form .username{
    width: 100%;
    height: 30px;
    border: 1px solid #ececec;
    outline: none;
    text-indent: 10px;
    margin-bottom: 30px;
    font-size: 0.8rem;
}
.content .login_menu .main form .password{
    width: 100%;
    height: 30px;
    border: 1px solid #ececec;
    outline: none;

    margin-bottom: 30px;
    font-size: 0.8rem;
    text-indent: 10px;
}
.content .login_menu .main form .login_btn{
    width: 100%;
    height: 30px;
    background: #25a3fa;
    outline: none;
    color: #FFFFFF;
    font-size: 1rem;
    letter-spacing: 20px;

    border: 1px solid #25a3fa;


}
.content .login_menu .main .imde{
    width: 100%;
    height: 50px;
    line-height: 50px;


}
.content .login_menu .main .imde a{
    float: right;
    padding: 0 10px;
    font-size: 0.8rem;
}
/*大屏幕 */
@media (min-width: 1200px) {

}
/*平板电脑和小屏电脑之间的分辨率*/
@media (min-width: 768px) and (max-width: 979px) {
    .content .login_menu{
        width: 86%;
        margin: 0 7%;

    }

}
/* 横向放置的手机和竖向放置的平板之间的分辨率*/
@media (max-width: 767px) {
    .content .login_menu{
        width: 70%;
        margin: 0 15%;
        padding-top: 30px;
        border-radius: 20px;
    }
    .content .login_menu .ad{
        display: none;
    }
    .content .login_menu .main{
        width: 80%;
        padding: 0 10%;
    }

}
/*横向放置的手机及分辨率更小的设备*/
@media (max-width: 480px){
    header{
        height: 72px;
    }


}