How to center a div horizontally and vertically on the screen
<p>Recently when writing web pages, it is often necessary to display p in the center of the screen, so I recorded several common methods, which are relatively simple. Simply add the
<center></center> tag to the horizontal center, or set margin:auto;Of course, you can also use the following method
<p>The following two Method to plant in the middle of the screen (horizontally centered and vertically centered) Put the demonstration html code:
<body> <p class="main"> <h1 id="MAIN">MAIN</h1> </p> </body>
- Method 1:
margin:auto;And set the values of top, left, right, and bottom to be equal , not necessarily all 0. .main{
text-align: center; /*让p内部文字居中*/
background-color: #fff;
border-radius: 20px;
width: 300px;
height: 350px;
margin: auto;
position: absolute;
top: 0;
left: 0;
right: 0;
bottom: 0;
}
- Method 2:
It is still an absolute layout, let left and top both be 50%, which is in the horizontal direction Let the leftmost part of p be 50% away from the leftmost part of the screen, which is the same in the vertical direction, so use transform to translate 50% of its own width (height) to the left (upward), thus achieving the centering effect. The rendering is as follows Same as above.
.main{
text-align: center;
background-color: #fff;
border-radius: 20px;
width: 300px;
height: 350px;
position: absolute;
left: 50%;
top: 50%;
transform: translate(-50%,-50%);
}- Method 3:
For horizontal centering, you can use the simplest<center>tag, but it is outdated. The usage is as follows:
<p><center>123</center></p>
<center> tag is relative to the text in the <p> tag, which can be centered. <p>Since the center tag is outdated, it is not recommended to use it in a formal way. You can use the following method instead: <p style="text-align:center;">123</p>
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