<svg viewBox="0 0 220 100" xmlns="http://www.w3.org/2000/svg">
<!-- Rounded corner rectangle -->
<rect x="120" width="100" height="100" rx="15" />
</svg>
<svg viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg">
<circle cx="50" cy="50" r="50"/>
</svg>
<svg viewBox="0 0 200 100" xmlns="http://www.w3.org/2000/svg">
<ellipse cx="100" cy="50" rx="100" ry="50" />
</svg>
<svg viewBox="0 0 200 100" xmlns="http://www.w3.org/2000/svg">
<polygon points="100,100 150,25 150,75 200,0" fill="none" stroke="black" />
</svg>
<svg viewBox="0 0 200 100" xmlns="http://www.w3.org/2000/svg">
<polyline points="100,100 150,25 150,75 200,0" fill="none" stroke="black" stroke-width="4" />
</svg>
vector-effect="non-scaling-stroke"
stroke-linecap: round;
: butt, square, round
viewBox="{{x origin}} {{y origin}} {{ width }} {{ height }}"