求前端高手帮我看看图中框里的两个样式问题，代码如下。_html/css

@CHARSET "UTF-8";*{margin:0;padding:0;list-style-type:none;}a,img{border:none;}a{color:#1D569C;text-decoration:none;}a:hover{color:#ED3E22;text-decoration:underline;}/* focus */.focus{margin-left:30%;margin-top:3.5%;width:520px;height:300px;float:left;border:3px solid #d9d9d9;position:relative;}.focus #pic{width:520px;height:300px;overflow:hidden;}.focus #pic ul{width:4216px;height:300px;float:left;}.focus #pic li{width:520px;height:300px;float:left;}.focus #pic li img{width:520px;height:300px;float:left;}.focus .tip-bg{width:520px;height:21px;background:#000;filter:alpha(opacity=80);opacity:0.80;position:absolute;left:0;bottom:0;z-index:12;}.focus #tip{width:96px;height:14px;position:absolute;left:40%;margin:-17px 0 0;z-index:13;}.focus #tip ul li{width:14px;height:14px;float:left;display:inline;margin:0 5px;cursor:pointer;background:url(../img/focus_tip.png) no-repeat;}.focus #tip ul li.current{background:url(../img/focus_tip_current.png) no-repeat;}.focus .btn{width:42px;height:9px;position:absolute;right:0;bottom:5px;z-index:14;overflow:hidden;}.focus .btn ul{width:100%;float:left;}.focus .btn li{width:7px;height:9px;float:left;display:inline;margin:0 7px;cursor:pointer;overflow:hidden;}.focus .btn li.btn-left{background:url(../img/focus_btn_left.png) no-repeat left top;}.focus .btn li.btn-right{background:url(../img/focus_btn_right.png) no-repeat left top;}.focus .show{display:block!important;}