我使用基本的 HTML、CSS 和 Javascript 来创建一个简单的 Web 应用程序。当我尝试使用 text-align: center 和其他 CSS 元素将按钮居中时，我仍然遇到麻烦。我还尝试将文本居中在框中心内，但由于未知原因不起作用。到目前为止，我已经使用了 margin-left 和 margin-right 来调整按钮，但愿意知道如何将其居中，而不需要经历所有这些麻烦。
.image {
display: grid;
grid-template-columns: 50% 50%;
grid-template-rows: 50% 50%;
margin-top: 40px;
margin-left: 50px;
}
.image img {
cursor: pointer;
}
.image img:hover {
border: solid 2px #1e88e5;
border-radius: 2px;
}
.image #mother img:hover {
border: solid 2px #1e88e5;
border-radius: 2px;
}
.image img {
width: 100px;
height: 100px;
text-align: center;
padding: 10px;
margin-left: 30%;
}
.button{
width: 80px;
height: 40px;
text-align: center;
margin: auto;
display: flex;
padding-top: 8px;
padding-bottom: 8px;
background-color: rgb(43, 43, 219);
cursor: pointer;
border-radius: 2px;
}
.button:hover{
background-color: #242424;
}
.button:active{
background-color: #121212;
}
.button > span{
color: #eeeeee;
text-align: center;
}<!doctype html>
<html lang="en">
<head>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- Bootstrap CSS -->
<link href="https://cdn.jsdelivr.net/npm/<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="13717c7c67606761726353263d233d233e7176677221" rel="noreferrer noopener nofollow">[email protected]</a>/dist/css/bootstrap.min.css" rel="stylesheet"
integrity="sha384-BmbxuPwQa2lc/FVzBcNJ7UAyJxM6wuqIj61tLrc4wSX0szH/Ev+nYRRuWlolflfl" crossorigin="anonymous">
<title>Good Cop, Bad Cop</title>
<style>
.view-image img {
margin-left: 90px;
}
</style>
<link rel="stylesheet" href="../CSS/landing.css" />
<link rel="stylesheet" href="../CSS/coach_selection.css" />
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<link type="text/css" rel="stylesheet" href="https://www.gstatic.com/firebasejs/ui/4.6.1/firebase-ui-auth.css" />
</head>
<body>
<nav class="navbar navbar-custom">
<div class="container-fluid">
<a class="navbar-brand" href="">
<img src="../IMAGES/Hamburger_icon.svg" alt="Character" height="35vh" />
</a>
<a href="settings.html">
<ul class="navbar-nav">
<img src="../IMAGES/bootstrap-icons-1.3.0/person-circle.svg" alt="Profile" height="45vh" />
</ul>
</a>
</div>
</nav>
<div class="image">
<div>
<button type="button" id="dog-button" class="btn btn-light">
<img src="../images/dog.png" id="dog" alt="dog">
</button>
</div>
<div>
<button type="button" id="mother-button" class="btn btn-light">
<img src="../images/mother.png" id="mother" alt="mother">
</button>
</div>
<div>
<button type="button" id="soldier-button" class="btn btn-light">
<img src="../images/military.png" id="soldier" alt="soldier">
</button>
</div>
<div>
<button type="button" id="teacher-button" class="btn btn-light">
<img src="../images/teacher.png" id="teacher" alt="teacher">
</button>
</div>
<div class="button" id="button-confirm">
<span>Confirm</span>
</div>
<div class="view-image" style="display:none;">
<img src="" width="150" height="150" />
<div class="button" id="button-other"><span>Other</span></div>
</div>
</div>
<div class="fixed-bottom">
<div class="navbar navbar-custom">
<div class="container-fluid">
<div id="grid">
<div class="bot-nav-img">
<a href="Journal/journal_main.html">
<img src="../IMAGES/bootstrap-icons-1.3.0/book-fill.svg" alt="Journal" height="40vh" />
</a>
</div>
<div class="bot-nav-img">
<a href="landing.html">
<img src="../IMAGES/bootstrap-icons-1.3.0/house-door-fill.svg" alt="Home" height="40vh" />
</a>
</div>
<div class="bot-nav-img">
<a href="goals.html">
<img src="../IMAGES/bootstrap-icons-1.3.0/table.svg" alt="Goals" height="40vh" />
</a>
</div>
</div>
</div>
</div>
</body>
</html>最佳答案
在 css 中创建完美居中对齐的最快、最简单的方法是使用 Flexbox。
一般模式是，为需要其子元素居中的父元素提供一个 display: flex;、一个 justify-content: center; 和一个 对齐元素:中心；
对于你的代码，去掉所有的text-align。然后在 .button 类(已经是 display: flex)中添加 justify-content: center; 和 align-items:中心；
包含文本的 span 元素是按钮的子元素，因此它现在将居中。 span 元素本身不需要任何 CSS 属性来帮助其居中。
.button {
width: 80px;
height: 40px;
margin: auto;
display: flex;
justify-content: center;
align-items: center;
padding-top: 8px;
padding-bottom: 8px;
background-color: rgb(43, 43, 219);
cursor: pointer;
border-radius: 2px;
}
关于html - 如何在使用 CSS 创建响应式按钮时使按钮居中，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/66998073/