Collection
Collection
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
.box1{
width: 200px;
height: 200px;
background-color: skyblue;
padding: 20px 30px;
border-top: 20px dashed blue;
border-right: 30px solid red;
border-bottom: 20px dashed lawngreen;
border-left: 40px solid lightblue;
margin: 50px;
}
</style>
</head>
<body>
<div class="box1" > </div>
<P>padding是填充的意思,俗称"内边距"</P>
<p>margin是用来控制边缘位数状况,俗称"外边距"</p>
</body>
</html>点击 "运行实例" 按钮查看在线实例
<!DOCTYPE html>
<html lang="en" xmlns="http://www.w3.org/1999/html">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<style>
.box1{
width: 200px;
height: 200px;
background-color: skyblue;
text-align: center;
}
.box1 a{
line-height: 200px;
}
.box2{
width: 200px;
height: 200px;
background-color: slateblue;
text-align: center;
display: table-cell;
vertical-align: middle;
}
.box3{
width: 200px;
height: 200px;
background-color: darksalmon;
display:table-cell;
vertical-align: middle;
}
.box3 .child{
width: 100px;
height: 100px;
background-color: darkgray;
margin: auto;
}
.box4{
width: 200px;
height: 200px;
background-color: fuchsia;
text-align: center;
display:table-cell;
vertical-align:middle;
}
ul{
margin: 0;
padding: 0;
}
.box4 li{
display:inline;
}
</style>
<hr>
<div class="box1">
<a>第一种单行元素居中</a>
</div>
<hr>
<div class="box2">
<span>多行元素</span><br>
<span>实现居中</span>
</div>
<hr>
<div class="box3">
<div class="child">
</div>
</div>
<hr>
<div class="box4">
<ul>
<li>1</li>
<li>2</li>
<li>3</li>
<li>4</li>
<li>5</li>
</ul>
</div>
</body>
</html>点击 "运行实例" 按钮查看在线实例
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<style>
.box1{
width: 200px;
height: 200px;
background-color: skyblue;
position: relative;
left:200px;
}
.box2{
width: 200px;
height: 200px;
background-color: saddlebrown;
}
.box3{
width: 200px;
height: 200px;
background-color: fuchsia;
position: relative;
left:200px;
}
.box4{
width: 200px;
height: 200px;
background-color: darkcyan;
position: relative;
top:-400px;
left:400px;
}
.box5{
width: 200px;
height: 200px;
background-color: red;
position: relative;
top: -600px;
left: 200px;
}
</style>
<body>
<div class="box1"></div>
<div class="box2"></div>
<div class="box3"></div>
<div class="box4"></div>
<div class="box5"></div>
</body>
</html>点击 "运行实例" 按钮查看在线实例