代码片段：
<label class="mdl-icon-toggle mdl-js-icon-toggle mdl-js-ripple-effect">
<input class="mdl-icon-toggle__input" type="checkbox" value="0.9" checked="checked"/><i class="mdl-icon-toggle__label icon--custom">小</i>
</label>
<label class="mdl-icon-toggle mdl-js-icon-toggle mdl-js-ripple-effect">
<input class="mdl-icon-toggle__input" type="checkbox" value="1" checked="checked"/><i class="mdl-icon-toggle__label icon--custom">中</i>
</label>
<label class="mdl-icon-toggle mdl-js-icon-toggle mdl-js-ripple-effect">
<input class="mdl-icon-toggle__input" type="checkbox" value="1.1" checked="checked"/><i class="mdl-icon-toggle__label icon--custom">大</i>
</label></span></div>
