body {
    margin: 0px;
}
 
.patterns {
    width: 100vw;
    height: 100vw;
}
 
.pt1 {
    background-color: #026873;
    background-size: 13px 13px, 29px 29px, 37px 37px, 53px 53px;
    background-image: -webkit-linear-gradient(0, rgba(255, 255, 255, .07) 50%, transparent 50%), -webkit-linear-gradient(0, rgba(255, 255, 255, .13) 50%, transparent 50%), -webkit-linear-gradient(0, transparent 50%, rgba(255, 255, 255, .17) 50%), -webkit-linear-gradient(0, transparent 50%, rgba(255, 255, 255, .19) 50%);
    background-image: -moz-linear-gradient(0, rgba(255, 255, 255, .07) 50%, transparent 50%), -moz-linear-gradient(0, rgba(255, 255, 255, .13) 50%, transparent 50%), -moz-linear-gradient(0, transparent 50%, rgba(255, 255, 255, .17) 50%), -moz-linear-gradient(0, transparent 50%, rgba(255, 255, 255, .19) 50%);
    background-image: -ms-linear-gradient(0, rgba(255, 255, 255, .07) 50%, transparent 50%), -ms-linear-gradient(0, rgba(255, 255, 255, .13) 50%, transparent 50%), -ms-linear-gradient(0, transparent 50%, rgba(255, 255, 255, .17) 50%), -ms-linear-gradient(0, transparent 50%, rgba(255, 255, 255, .19) 50%);
    background-image: -o-linear-gradient(0, rgba(255, 255, 255, .07) 50%, transparent 50%), -o-linear-gradient(0, rgba(255, 255, 255, .13) 50%, transparent 50%), -o-linear-gradient(0, transparent 50%, rgba(255, 255, 255, .17) 50%), -o-linear-gradient(0, transparent 50%, rgba(255, 255, 255, .19) 50%);
    background-image: linear-gradient(0, rgba(255, 255, 255, .07) 50%, transparent 50%), linear-gradient(0, rgba(255, 255, 255, .13) 50%, transparent 50%), linear-gradient(0, transparent 50%, rgba(255, 255, 255, .17) 50%), linear-gradient(0, transparent 50%, rgba(255, 255, 255, .19) 50%);
}