SOURCE

// svg手册
// http://www.runoob.com/svg/svg-reference.html

<svg viewBox="0 0 200 200">
  <polygon 
           fill="#dd4814" 
           points="97.3,0 127.4,60.9 194.6,70.7 145.9,118.1 157.4,185.1 97.3,153.5 37.2,185.1 48.6,118.1 0,70.7 67.2,60.9">
    <animate 
             attributeName="points"
             dur="1200ms"
             fill="freeze"
             to ="110,58.2 147.3,0 192.1,29 141.7,105.1 118.7,139.8 88.8,185.1 46.1,156.5 0,125 23.5,86.6 71.1,116.7"
             />
    <animate 
             attributeName="fill"
             dur="1200ms"
             fill="freeze"
             to="yellow"
             />
  </polygon>
</svg>