Method: 1. Add the "display:flex" style to the div element and set the div element to a flexible layout style; 2. Add the "align-items:center;justify-content:center" style to the div element. Just set the button element within the div to be centered horizontally and vertically.
The operating environment of this tutorial: Windows 10 system, CSS3&&HTML5 version, Dell G3 computer.
How to center the button in the div in css
We can set the div element to a flexible layout through the display:flex; attribute, which is used to The div element provides the most flexibility.
align-items property defines the alignment of flex items in the direction of the cross axis (vertical axis) of the current row of the flex container.
justify-content is used to set or retrieve the alignment of the flexible box element in the main axis (horizontal axis) direction.
The example is as follows:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<style>
div{
width:200px;
height:200px;
border:1px solid #000;
display:flex;
justify-content:center;
align-items:center;
}
</style>
</head>
<body>
<div><button>按钮</button></div>
</body>
</html>Output result:
(Learning video sharing: css video tutorial)
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