Draw a line along the direction of the stripes, let's say along the main diagonal. Defaults for x1 , y1 , x2 , y2 are all 0 and we want the start point x1,y1 to be at 0,0 (top left corner) anyway, so we only set x2,y2 at 100%,100% (bottom right corner).

<line x2='100%' y2='100%' stroke='orange'/>

Make this line dashed.

<line x2='100%' y2='100%' stroke='orange' stroke-dasharray='20%'/>

Make this line thicker.

<line x2='100%' y2='100%' stroke='orange' stroke-dasharray='20%' stroke-width='20%'/>

No, not like that... really, much thicker!

<line x2='100%' y2='100%' stroke='orange' stroke-dasharray='20%' stroke-width='150%'/>