<div class="dia-line-g"></div>

.dia-line-g{
height:20px;
background-image:
repeating-linear-gradient(45deg,#fff,#fff 9px,transparent 9px,transparent 23px,#fff 23px,#fff 32px),
repeating-linear-gradient(135deg,#fff,#fff 9px,#088 9px,#088 23px,#fff 23px,#fff 32px);
margin:5px 0;
}