first commit

历届学生/front-end-team-10/项目练习/学生项目/韩孟雪/2023-2-9/盒模型练习.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>Document</title>
+    <style>
+        body {
+            margin: 0;
+            padding: 0;
+        }
+
+        .box1 {
+            width: 300px;
+            height: 200px;
+            background: red;
+            float: left;
+            margin-left: 10px;
+            padding-left: 20px;
+            box-sizing:border-box;
+        }
+
+        .box2 {
+            width: 300px;
+            height: 200px;
+            background: green;
+            overflow: hidden;
+        }
+
+        .box3 {
+            width: 300px;
+            height: 200px;
+            background: blue;
+            border: 10px solid black;
+        }
+    </style>
+</head>
+
+<body>
+    <div class="box">
+        <div class="box1">盒子1</div>
+        <div class="box2">盒子2</div>
+        <div class="box3">盒子3</div>
+    </div>
+
+</body>
+
+</html>