.tips{position:absolute;left:0px;right:0px;width:320px;display:none;overflow:visible;}
.tips a{display:block;float:left;width:100%;background:#fff;line-height:150%;text-indent:10px;color:blue;font-size:12px;}
.tips a:hover{color:red}

.kw{border-bottom:2px dotted blue;color:blue;}
.kw:hover{border-bottom:2px solid blue}