.loginku{background-image:url(../img/f.4583a860.jpg);background-position:50%;background-size:100% 100%}#particles-js,.loginku{width:100%;height:100%;background-repeat:no-repeat}#particles-js{position:absolute;background-size:cover;background-position:50% 50%}.normal_gradient{background:linear-gradient(145deg,#4a5e89 15%,#b61924 70%)}.dark_gradient{background:linear-gradient(145deg,#0b1a3d 15%,#4c1014 70%)}.login-form{position:absolute}