我一直在嘗試讓 Bootstrap 網格在我的頁面上垂直居中，但似乎無法使其居中。水平中心作業正常。
HTML：
<div class="container-fluid">
<div class="board vh-100">
<div class="row t-row justify-content-center">
<div class="col-4 tic-box">A</div>
<div class="col-4 tic-box">B</div>
<div class="col-4 tic-box">C</div>
</div>
<div class="row t-row justify-content-center">
<div class="col-4 tic-box">D</div>
<div class="col-4 tic-box">E</div>
<div class="col-4 tic-box">F</div>
</div>
<div class="row t-row justify-content-center">
<div class="col-4 tic-box">G</div>
<div class="col-4 tic-box">H</div>
<div class="col-4 tic-box">I</div>
</div>
</div>
</div>
CSS：
.tic-box {
border: solid black 1px;
font-size: 3vw;
text-align: center;
width: 90px;
height: 90px;
}
謝謝你的幫助！
uj5u.com熱心網友回復：
由于您的 board 元素具有特定的高度 v-100，您可以將以下 css 屬性添加到您的 board 元素以使其內容居中。
.board{
display:flex;
flex-direction: column;
justify-content:center;}
uj5u.com熱心網友回復：
干得好...
d-flex如果你使用justify-content-or類，你總是需要使用align-items-類。- 用
div. 請參閱下面的片段。
body,
html {
margin: 0;
overflow-x: hidden;
}
.tic-box {
border: solid black 1px;
font-size: 3vw;
text-align: center;
width: 90px;
height: 90px;
}<!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>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" integrity="sha384-F3w7mX95PdgyTmZZMECAngseQB83DfGTowi0iMjiWaeVhAn4FJkqJByhZMI3AhiU" crossorigin="anonymous">
<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.min.js" integrity="sha384-skAcpIdS7UcVUC05LJ9Dxay8AXcDYfBJqt1CJ85S/CFujBsIzCIv l9liuYLaMQ/" crossorigin="anonymous"></script>
</head>
<body>
<div class="container-fluid">
<div class="board vh-100 d-flex align-items-center">
<div class="w-100">
<div class="row d-flex justify-content-center">
<div class="col-4 tic-box">A</div>
<div class="col-4 tic-box">B</div>
<div class="col-4 tic-box">C</div>
</div>
<div class="row d-flex justify-content-center">
<div class="col-4 tic-box">D</div>
<div class="col-4 tic-box">E</div>
<div class="col-4 tic-box">F</div>
</div>
<div class="row d-flex justify-content-center">
<div class="col-4 tic-box">G</div>
<div class="col-4 tic-box">H</div>
<div class="col-4 tic-box">I</div>
</div>
</div>
</div>
</div>
</body>
</html>uj5u.com熱心網友回復：
嗨，我認為這是滿足您要求的最干凈的方法！
.tic-box {
border: solid black 1px;
font-size: 3vw;
text-align: center;
width: 90px;
height: 90px;
}<!doctype html>
<html lang="en">
<head>
<title>Center</title>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<!-- Bootstrap CSS v5.0.2 -->
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">
</head>
<body>
<div class="container-fluid d-flex align-items-center min-vh-100">
<div class="board mx-auto">
<div class="row t-row justify-content-center">
<div class="col-4 tic-box">A</div>
<div class="col-4 tic-box">B</div>
<div class="col-4 tic-box">C</div>
</div>
<div class="row t-row justify-content-center">
<div class="col-4 tic-box">D</div>
<div class="col-4 tic-box">E</div>
<div class="col-4 tic-box">F</div>
</div>
<div class="row t-row justify-content-center">
<div class="col-4 tic-box">G</div>
<div class="col-4 tic-box">H</div>
<div class="col-4 tic-box">I</div>
</div>
</div>
</div>
<!-- Bootstrap JavaScript Libraries -->
<script src="https://cdn.jsdelivr.net/npm/@popperjs/[email protected]/dist/umd/popper.min.js" integrity="sha384-IQsoLXl5PILFhosVNubq5LC7Qb9DXgDA9i tQ8Zj3iwWAwPtgFTxbJ8NT4GN1R8p" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.min.js" integrity="sha384-cVKIPhGWiC2Al4u LWgxfKTRIcfu0JTxR EQDz/bgldoEyl4H0zUF0QKbrJ0EcQF" crossorigin="anonymous"></script>
</body>
</html>uj5u.com熱心網友回復：
我得到了它 -
body{
justify-content: center;
align-items: center;
display: flex;
}
.tic-box {
border: solid black 1px;
font-size: 3vw;
text-align: center;
width: 90px;
height: 90px;
}<div class="container-fluid">
<div class="board vh-100">
<div class="row t-row justify-content-center">
<div class="col-4 tic-box">A</div>
<div class="col-4 tic-box">B</div>
<div class="col-4 tic-box">C</div>
</div>
<div class="row t-row justify-content-center">
<div class="col-4 tic-box">D</div>
<div class="col-4 tic-box">E</div>
<div class="col-4 tic-box">F</div>
</div>
<div class="row t-row justify-content-center">
<div class="col-4 tic-box">G</div>
<div class="col-4 tic-box">H</div>
<div class="col-4 tic-box">I</div>
</div>
</div>
</div>轉載請註明出處，本文鏈接：https://www.uj5u.com/qiye/467917.html
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