*{
    margin: 0;
    padding: 0;
}
.cavs{
    z-index:1;
    position: fixed;
    width:95%;
    margin-left: 20px;
    margin-right: 20px;
}

html,body{
    width: 100%;
    height: 100%;
    background: url("../images/bg.jpg") no-repeat;
    background-size: 100% 100%;

}



.loginmain{

    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    margin: auto;
    padding: 100px 40px 40px 40px;
    box-shadow: -15px 15px 15px rgba(6, 17, 47, 0.7);
    z-index: 99999;
    border-radius: 3px;
}