box-sizing: border-box;
border: 40px solid transparent;
max-height: 150px;

svg style="background:#ffff00" xmlns="http://www.w3.org/2000/svg" width="100" viewBox="0 0 100 100"

svg style="background:#ff00ff" xmlns="http://www.w3.org/2000/svg" width="100"

svg style="background:#ffee99" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"