<div class="col-4 ">
    <svg width="200px" height="200px" viewBox="0 0 200 200">
     <!-- horizontal line -->
    <line x1="0" y1="20" x2="180" y2="20" style="stroke:black"/>
    <!-- vertical line -->
    <line x1="20" y1="0" x2="20" y2="180" style="stroke:black"/>
    <!-- diagonal line -->
    <line x1="0" y1="0" x2="180" y2="180" style="stroke:black"/>
    </svg>
</div>