SOURCE

<div class='info'></div>

.info::before {
    content: '';
    position: absolute;
    top: 30px;
    width: 100%;
    height: 0.25em;

    background:
        linear-gradient(135deg, transparent, transparent 45%, #008000, transparent 55%, transparent 100%),
        linear-gradient(45deg, transparent, transparent 45%, #008000, transparent 55%, transparent 100%);
    background-size: 0.5em 0.5em;
    background-repeat: repeat-x, repeat-x;
}