class中 padding和margin的用法;

发布于:2024-04-18 ⋅ 阅读:(80) ⋅ 点赞:(0)

如果我们想要移动盒子等的位置 ,除了可以用相对定位和绝对定位还可以用margin 和paddinng;

结构如图所示

margin和padding的用法:
padding和margin后面可以跟1或2或3或4个数,按照顺序分别是上,右,下,左。具体的操作如下:
(1)padding(margin)-left:10px;左内(外)边距;
(2)padding(margin)-right:10px;右内(外)边距;
(3)padding(margin)-top:10px;上内(外)边距;
(4)padding(margin)-bottom:10px;下内(外)边距;
(5)padding(margin):10px;四边统一内(外)边距;
(6)padding(margin):10px 20px; 10px是上下内(外)边距;20px是左右内(外)边距
(7)padding(margin):10px 20px 30px; 10px是上内(外)边距;20px是左右内(外)边距;30px是下内(外)边距;
(8)padding(margin):10px 20px 30px 40px; 10px是上内(外)边距;20px是右内(外)边距;30px是下内(外)边距;40px是左内边距;

示例效果图

代码

	<!DOCTYPE html>
	<html lang="en">
		<head>
			<meta charset="UTF-8">
			<meta name="viewport" content="width=device-width, initial-scale=1.0">
			<title>优化后的HTML</title>
			<style>
				.container {
					display: flex;
					justify-content: space-between;
					padding: 20px;
				}

				.box {
					width: 22%;
					display: flex;
					flex-direction: column;
					align-items: center;
				}

				.content {
					width: 100%;
					height: 30px;
					display: flex;
					justify-content: center;
					align-items: center;
					background-color: #AAAAAA;
					border-radius: 8px;
					margin-top: 10px;
				}

				.content.middle {
					height: 90px;
				}

				.content.buttom {
					height: 60px;
				}

				.content.content2_1 {
					height: 200px;
				}

				/* 第三快的弹性 */
				.box3_2 {
					width: 100%;
					justify-content: space-between;
					display: flex;
				}

				.content.box3_2_1 {
					width: 40%;
					height: 60px;
				}
			</style>
		</head>
		<body>
			<div class="container">
				<div class="box one">
					<div class="content top">
						<p>1</p>
					</div>
					<div class="content middle">
						<p>1</p>
					</div>
					<div class="content buttom">
						<p>1</p>
					</div>
				</div>

				<div class="box tow">
					<div class="content content2_1 ">
						<p>2</p>
					</div>
				</div>

				<div class="box Three">
					<div class="content">
						<p>3</p>
					</div>
					<div class="box3_2">
						<div class="content box3_2_1">3</div>
						<div class="content box3_2_1">3</div>
					</div>
					<div class="content middle">
						<p>3</p>
					</div>
				</div>

				<div class="box Four">
					<div class="content">
						<p>4</p>
					</div>
					<div class="content middle">
						<p>4</p>
					</div>
					<div class="content buttom">
						<p>4</p>
					</div>
				</div>
			</div>
		</body>
	</html>
	</body>
	</html>

希望可以帮到大家