我已粘贴在HTML代码段下方，该代码段的div包含一个容器类，该容器类包含四个子div，其中一个类名为“city”。
我正在尝试通过应用bootstrap将它们排成一行。
我已将我的样式表粘贴在HTML下面。我已经尝试了一个多小时，通过增加和减少右/左边距但无法正确使用。
<!DOCTYPE html>
<html lang="en-us">
<head>
<link rel="stylesheet" type="text/css" href="./index.css">
<link rel="stylesheet" type="text/css" href="../css/bootstrap.min.css">
</head>
<body>
<div class="container">
<h1 id="cities">Cities Of The World</h1>
<div class="city">
<h2>London</h2>
<p>London is the capital city of England.</p>
<p>It is the most populous city in the United Kingdom, with a metropolitan area of over 13 million inhabitants.</p>
</div>
<div class="city">
<h2>Paris</h2>
<p>Paris is the capital of France.</p>
<p>The Paris area is one of the largest population centers in Europe, with more than 12 million inhabitants.</p>
</div>
<div class="city">
<h2>Tokyo</h2>
<p>Tokyo is the capital of Japan.</p>
<p>It is the center of the Greater Tokyo Area, and the most populous metropolitan area in the world.</p>
</div>
<div class="city">
<h2>New York</h2>
<p>The City of New York is the most populous city in the United States.</p>
<p>New York is an important center for international diplomacy and has been described as the cultural and financial capital of the world.</p>
</div>
</div>
</body>
</html>
#cities {
text-align: center;
padding: 20px;
}
.city {
display: inline-block;
margin: 10px;
padding: 15px;
max-width: 250px;
height: 300px;
border: 1px solid black;
}
答案 0 :(得分：0)
将您的.city包裹到父<div>（在我的情况下为.city-holder）一个弹性容器中。像：
.city-holder {
display: flex;
}
请看下面的代码段：
.city-holder {
display: flex;
}<!DOCTYPE html>
<html lang="en-us">
<head>
<link rel="stylesheet" type="text/css" href="./index.css">
<link rel="stylesheet" type="text/css" href="../css/bootstrap.min.css">
</head>
<body>
<div class="container">
<h1 id="cities">Cities Of The World</h1>
<div class="city-holder">
<div class="city">
<h2>London</h2>
<p>London is the capital city of England.</p>
<p>It is the most populous city in the United Kingdom, with a metropolitan area of over 13 million inhabitants.</p>
</div>
<div class="city">
<h2>Paris</h2>
<p>Paris is the capital of France.</p>
<p>The Paris area is one of the largest population centers in Europe, with more than 12 million inhabitants.</p>
</div>
<div class="city">
<h2>Tokyo</h2>
<p>Tokyo is the capital of Japan.</p>
<p>It is the center of the Greater Tokyo Area, and the most populous metropolitan area in the world.</p>
</div>
<div class="city">
<h2>New York</h2>
<p>The City of New York is the most populous city in the United States.</p>
<p>New York is an important center for international diplomacy and has been described as the cultural and financial capital of the world.</p>
</div>
</div>
</div>
</body>
</html>
使用col-xs-*，请查看以下代码段：
<!DOCTYPE html>
<html lang="en-us">
<head>
<link rel="stylesheet" type="text/css" href="./index.css">
<link rel="stylesheet" type="text/css" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/bootstrap.min.css">
</head>
<body>
<div class="container">
<h1 id="cities">Cities Of The World</h1>
<div class="row">
<div class="col-sm-3 city">
<h2>London</h2>
<p>London is the capital city of England.</p>
<p>It is the most populous city in the United Kingdom, with a metropolitan area of over 13 million inhabitants.</p>
</div>
<div class="col-sm-3 city">
<h2>Paris</h2>
<p>Paris is the capital of France.</p>
<p>The Paris area is one of the largest population centers in Europe, with more than 12 million inhabitants.</p>
</div>
<div class="col-sm-3 city">
<h2>Tokyo</h2>
<p>Tokyo is the capital of Japan.</p>
<p>It is the center of the Greater Tokyo Area, and the most populous metropolitan area in the world.</p>
</div>
<div class="col-sm-3 city">
<h2>New York</h2>
<p>The City of New York is the most populous city in the United States.</p>
<p>New York is an important center for international diplomacy and has been described as the cultural and financial capital of the world.</p>
</div>
</div>
</div>
</body>
</html>
希望这有帮助！