代码#ds-smilies-tooltip { max-width: 400px; min-width: 200px; width: -webkit-calc(100% - 130px); /* WebKit 536.3 (Chrome 19) and above, experimental */ width: calc(100% - 130px); /* final CSS3 compliant implementation; Firefox 16 and IE 9, and above */ }在原有的css基础上面加上这段就OK了[...]