為什么我的圓角弄不出來
完全是按老師的代碼走的。
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??
body{ background: #f5f5f5; }
.top{width: 100%; height: 27px; background:url(../images/header.jpg) repeat-x;}
.top_content{width: 1000px; margin: 0 auto;}
.top_content li{list-style-image: url(../images/listsype.gif); float: right; width: 70px; line-height: 27px;}
.top_content a:link,.top_content a:visited{color: #8e8e8e; text-decoration: none;}
.top_content a:hover,.top_content a:active{color: red; text-decoration: none;}
.warp{width: 1000px; margin: 0 auto;}
.logo{ height: 80px; background-color: #fff; width: 1000px;margin: 0 auto;}
.logo_left{width: 200px;float: left;}
.logo_right{width: 300px; float: right; height: 28px;margin-top: 30px;color: #8e8e8e;}
.logo_right img{ vertical-align: middle; margin-right: 10px; }
.tel{font-family: "微軟雅黑"; font-size: 16px; color: #c00;}
.nav{height: 40px; }
.nav_left{width: 10px; background: url(../images/nav_left.jpg) no-repeat; float: left;}
.nav_mid{width: 980px; background: url(../images/nav_bg.jpg) repeat-x ;float: left;float: left;}
.nav_right{width: 10px;; background: url(../images/nav_right.jpg) no-repeat;float: left; }
.nav_left,.nav_mid,.nav_right{height: 40px;}
.nav_mid_left, .nav_mid_right{ float: left; }
.nav_mid_left{width: 680px;}
.nav_mid_right{width:300px;}
.nav_mid_left li{float: left; width: 100px; text-align: center;line-height: 40px}
.nav_mid_left a:link,.nav_mid_left a:visited{color: #fff; text-decoration: none; font-size: 16px;font-family: "微軟雅黑";}
.nav_mid_left a:hover,.nav_mid_left a:active{color: yellow;}
.seach_text{ width: 190px; height: 25px;margin-top: 5px; background: url(../images/search.jpg) no-repeat right center; background-color: #fff; padding-right: 25px; border: 1px solid #fff; }
2016-04-25
剛好我昨天也遇到了這種情況。把上面logo盒子的高度弄高一點。因為慕課網那個logo的高度比它所在的盒子高一些，float使他脫離文本流了，下面那個左圓角的圖片也是float，它會貼著那個圖片排列。還有一個辦法就是設置它clear：left，