.background{
    pointer-events: none;
    -khtml-user-select : none;
    -webkit-user-select : none;
    -moz-user-select : -moz-none;
    -ms-user-select : none;
    user-select : none; 
    position: fixed;
    z-index: -2;
    top:50%;
    left:50%;
    transform: translate(-50%,-50%);
}
.background_menu{
    pointer-events: none;
    -khtml-user-select : none;
    -webkit-user-select : none;
    -moz-user-select : -moz-none;
    -ms-user-select : none;
    user-select : none; 
    position: absolute;
    z-index: -1;
    left:50%;
    transform: translateX(-50%);
    background-color: rgb(255, 255, 255,1);
    border-radius: 20px;
}