Figure 1
CodePudding user response:
<meta charset="utf-8" & gt;No title documents & lt;/title> <br/><style> <br/>* {<br/><br/>margin: 0; <br/>padding: 0; <br/>list-style: none; <br/>Color: # F0E5E5; <br/><br/>} <br/><br/>HTML, <br/>Body {<br/>height: 100%; <br/>} <br/><br/>. Biankuang {<br/>width: 100%; <br/>height: 100%; <br/>display: flex; <br/>} <br/><br/>The nav {<br/>Background: # 3 d3939; <br/>Width: 160 px; <br/>} <br/><br/>. The content {<br/>flex: 1; <br/>} <br/><br/>. The content li {<br/>position: relative; <br/>width: 100%; <br/>height: 100%; <br/>display: none; <br/>} <br/><br/>. The content li. Active {<br/>display: block; <br/>} <br/><br/>. The content li iframe {<br/>position: absolute; <br/>width: 100%; <br/>height: 100%; <br/>} <br/><br/>. Biankuang. Nav li {<br/>height: 50px; <br/>Width: 150 px; <br/>Border: # 4 px solid CCC; <br/>float: left; <br/>margin: 0; <br/>Padding: 1; <br/>text-align: center; <br/>The line - height: 3; <br/>} <br/>. Biankuang. Nav li. Active {<br/>Border - color: # E23131; <br/><br/>} <br/></style> <br/></head> <br/><br/><body> <br/><Div & gt; <br/><Ul & gt; <br/><Li> Baidu & lt;/li> <br/><Li> CSDN</li> <br/><Li> Baidu & lt;/li> <br/><Li> CSDN</li> <br/><Li> Baidu & lt;/li> <br/><Li> CSDN</li> <br/></ul> <br/><Ul & gt; <br/><Li> <br/><iframe SRC="http://www.baidu.com/" frameborder="0" & gt; </iframe> <br/></li> <br/><Li> <br/><iframe SRC="https://bbs.csdn.net/forums/WebDevelop" frameborder="0" & gt; </iframe> <br/></li> <br/><Li> <br/><iframe SRC="http://www.baidu.com/" frameborder="0" & gt; </iframe> <br/></li> <br/><Li> <br/><iframe SRC="https://bbs.csdn.net/forums/WebDevelop" frameborder="0" & gt; </iframe> <br/></li> <br/><Li> <br/><iframe SRC="http://www.baidu.com/" frameborder="0" & gt; </iframe> <br/></li> <br/><Li> <br/><iframe SRC="https://bbs.csdn.net/forums/WebDevelop" frameborder="0" & gt; </iframe> <br/></li> <br/></ul> <br/></div> <br/><script> <br/>Const navs=document. 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Doctype html> <br/><Html> <br/><br/><head> <br/><meta charset="utf-8" & gt; <br/><title> No title documents & lt;/title> <br/><style> <br/>* {<br/><br/>margin: 0; <br/>padding: 0; <br/>list-style: none; <br/>Color: # F0E5E5; <br/><br/>} <br/><br/>HTML, <br/>Body {<br/>height: 100%; <br/>} <br/><br/>. Biankuang {<br/>width: 100%; <br/>height: 100%; <br/>display: flex; <br/>} <br/><br/>The nav {<br/>Background: # 3 d3939; <br/>Width: 160 px; <br/>} <br/><br/>. The content {<br/>flex: 1; <br/>} <br/><br/>. The content li {<br/>position: relative; <br/>width: 100%; <br/>height: 100%; <br/>display: none; <br/>} <br/><br/>. The content li. Active {<br/>display: block; <br/>} <br/><br/>. The content li iframe {<br/>position: absolute; <br/>width: 100%; <br/>height: 100%; <br/>} <br/><br/>. Biankuang. Nav li {<br/>height: 50px; <br/>Width: 150 px; <br/>Border: # 4 px solid CCC; <br/>float: left; <br/>margin: 0; <br/>Padding: 1; <br/>text-align: center; <br/>The line - height: 3; <br/>} <br/>. Biankuang. Nav li. 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