<svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="400" height="400" > <circle cx="150" cy="150" r="50" class="red"/> <polygon fill="green" stroke="orange" stroke-width="1" points="0,0 100,0 100,100 0,100 0,0"/> </svg>

.red { fill: red; }