body{
    background-image: url(../img/acct_creation_bg.jpg);
    background-repeat: no-repeat;
    background-size: cover;
    height: 100%;
    background-attachment: fixed; /* 背景图片固定 */
}

#log_0{
    width: 90%;
}
.log_2{
    margin-top: 40px;
}
#log_h{
    color: #ffffff;
}
#log_h1{
    color: #777575;

}

#log_h2{
    color: #777575;

}
#log_h3{
    color: #777575;

}
#log_button{
    width: 100%;
    margin-top: 30px;
}

#b{
    position:absolute;
    top: 150%;

}