<!doctype html><html lang="en"><head> <meta charset="utf-8"> <title>盒子模型的应用</title> <link href="index.css" type="text/css" rel="stylesheet"></head><body> <div class="top"> <div class="top_content"></div> </div> <div class="body"> <div class="body_img"></div> <div class="body_content"> <div class="body_no"></div> </div> </div> <div class="footing"> <div class="footing_content"></div> <div class="footing_subsav"></div> </div></body></html>
*{ margin: 0px; padding: 0px;}.top{ width: 100%; height: 50px; background-color: black;}.top_content{ width: 75%; height: 50px; margin: 0px auto; background-color: blue;}.body{ margin: 20px auto; width: 75%; height: 1500px; background-color: blanchedalmond;}.body_img{ width:100%; height: 400px; background-color: darkorange;}.body_content{ width: 100%; height: 1100px; background-color: blueviolet;}.body_no{ width: 100%; height: 50px; background-color: aqua;}.footing{ width: 75%; height: 400px; background-color: indigo; margin: 0px auto;}.footing_content{ width: 100%; height: 300px; background-color: darkseagreen;}.footing_subSav{ width: 100%; height: 100px; background-color: black;}
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