<div style="
background: linear-gradient(135deg, transparent 0px, rgb(31,54,116,.6) 0) top left,
linear-gradient(-135deg, transparent 20px, rgb(31,54,116,.6) 0) top right,
linear-gradient(-45deg, transparent 0px, rgb(31,54,116,.6) 0) bottom right,
linear-gradient(45deg, transparent 20px, rgb(31,54,116,.6) 0) bottom left;
background-size: 100px 60px;
background-repeat: no-repeat;
height: 120px;
width: 200px;
">
</div>
