first commit

历届学生/front-end-team/项目练习/上课项目/综合练习/居中&浮动/index1.html

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+<!DOCTYPE html>
+<html lang="en">
+
+<head>
+    <meta charset="UTF-8">
+    <meta http-equiv="X-UA-Compatible" content="IE=edge">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>margin 居中</title>
+    <style>
+        * {
+            margin: 0;
+            padding: 0;
+            list-style: none;
+        }
+
+        .header {
+            height: 60px;
+            background: black;
+        }
+
+        .center {
+            width: 1200px;
+            margin: 0 auto;
+            background: red;
+            height: 100%;
+            /* overflow: hidden; */
+        }
+
+        .center li {
+            float: left;
+            line-height: 60px;
+            width: 70px;
+            text-align: center;
+        }
+    </style>
+</head>
+
+<body>
+
+    <div class="header">
+        <ul class="center">
+            <li>你好</li>
+            <li>你好</li>
+            <li>你好</li>
+            <li>你好</li>
+            <li>你好</li>
+            <li>你好</li>
+        </ul>
+    </div>
+
+</body>
+
+</html>