body{

    
}

.achtergrond{
    background-color: #e5e5f7;
    opacity: 0.5;
    background-image:  radial-gradient(#444cf7 0.8500000000000001px, transparent 0.8500000000000001px), radial-gradient(#444cf7 0.8500000000000001px, #e5e5f7 0.8500000000000001px);
    background-size: 34px 34px;
    background-position: 0 0,17px 17px;
}