body,html{
    width: 100%;
    height: 100%;
    min-width: auto
}
.reg_main{
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: url(../images/reg_bg.jpg) no-repeat center center;
    background-size: cover;
}
.reg_card{
    width: 500px;
    height: auto;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%)
}
.reg_form{
    background: #fff;
    border-radius: 30px;
    padding: 20px;
    box-shadow: 4px 4px 10px rgba(75, 75, 75, 0.1);
}