<div class="cp_bgpattern20"></div>
.cp_bgpattern20 {
background-color: rgba(250,250,250,1);
background-image:
radial-gradient(closest-side,
transparent 99.9%, rgba(236,236,236,0.8) 100%),
radial-gradient(closest-side,
transparent 99.9%, rgba(236,236,236,0.8) 100%);
background-position: 0 0, 30px 30px;
background-size: 60px 60px;
}