<div class="x-line"></div>

.x-line{
height:10px;
background-image:
repeating-linear-gradient(135deg,transparent,transparent 12px,#99f 12px,#99f 14px),
repeating-linear-gradient(45deg,transparent,transparent 12px,#99f 12px,#99f 14px);
margin:5px 0;
}