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html - 如何在容器中居中图像链接？

问题描述

我想了解为什么图像不一定正确居中。有人告诉我，默认情况下，<a>标签是inline元素，所以为了改变它们的大小，你需要将它们的display属性更改为blockor inline block。然后，一旦你设置了<a>标签的宽度，你可以将标签的宽度设置<img>为 100%，它将符合<a>标签的形状。

HTML： 

<!doctype html>
<html lang="en">
    <head>
        <meta charset="utf-8">
        <title>Photo Gallery</title>
        <meta name="viewport" content="width=device-width, initial-scale=1">
        <link rel="stylesheet" href="css/normalize.css">
        <link rel="stylesheet" href="js/lightbox/lightbox.min.css">
        <link rel="stylesheet" href="css/main.css">
    </head>
    <body>
        <div class=container>

            <!-- <form action="form-field"> -->
            <input type="search" id="site-search" placeholder="Search(16pt)">
            <!-- </form> -->

            <div class="images">
                <a href= "photos/thumbnails/01.jpg" data-lightbox="image-1"><img src="photos/thumbnails/01.jpg" alt="Image 1"></a>
                <a href= "photos/thumbnails/02.jpg" data-lightbox="image-2"><img src="photos/thumbnails/02.jpg" alt="Image 2"></a>
                <a href= "photos/thumbnails/03.jpg" data-lightbox="image-3"><img src="photos/thumbnails/03.jpg" alt="Image 3"></a>
                <a href= "photos/thumbnails/04.jpg" data-lightbox="image-4"><img src="photos/thumbnails/04.jpg" alt="Image 4"></a>
                <a href= "photos/thumbnails/05.jpg" data-lightbox="image-5"><img src="photos/thumbnails/05.jpg" alt="Image 5"></a>
                <a href= "photos/thumbnails/06.jpg" data-lightbox="image-6"><img src="photos/thumbnails/06.jpg" alt="Image 6"></a>
                <a href= "photos/thumbnails/07.jpg" data-lightbox="image-7"><img src="photos/thumbnails/07.jpg" alt="Image 7"></a>
                <a href= "photos/thumbnails/08.jpg" data-lightbox="image-8"><img src="photos/thumbnails/08.jpg" alt="Image 8"></a>
                <a href= "photos/thumbnails/09.jpg" data-lightbox="image-9"><img src="photos/thumbnails/09.jpg" alt="Image 9"></a>
                <a href= "photos/thumbnails/10.jpg" data-lightbox="image-10"><img src="photos/thumbnails/10.jpg" alt="Image 10"></a>
                <a href= "photos/thumbnails/11.jpg" data-lightbox="image-11"><img src="photos/thumbnails/11.jpg" alt="Image 11"></a>
                <a href= "photos/thumbnails/12.jpg" data-lightbox="image-12"><img src="photos/thumbnails/12.jpg" alt="Image 12"></a>
            </div>

        </div>
        <script src="js/jquery-3.4.1.min.js"></script>
        <script src="js/lightbox/lightbox-plus-jquery.min.js"></script>
        <script src="js/main.js"></script>
    </body>
</html>

CSS：

.container {
    display: flex;
    flex-direction: column;
    margin: 0 auto; 
    padding: 10px;
}

input[type="search"] {
    height: 30px;
}

.images {
    border: 1px red solid;
    padding: 0 auto;
}

/* If a flex container is set to width */

但我试过它仍然没有工作。我知道图像在导入时有自己的尺寸，但这里的逻辑是什么？在处理图像时，我一直不得不尝试使用 CSS 设置，因为它们是如此不可预测。

https://ibb.co/Y02j6VL

标签： htmlcss

解决方案

可能有4种可能。

1）将您的.images填充更改为 margin: 0 auto，如下所示：

.images {
  border: 1px red solid;
  margin: 0 auto;
}

2)根据您的布局，图像也可能占用 100% 的宽度。所以你还需要添加图像div text-align:center。

3）您的图像 div 可以转换为display:flex然后justify-content: center在其上设置。

4）如果要使用.container内容居中。您可以align-item:center在图像 div 上使用。因为，容器有flex-direction:column

.container {
  display: flex;
  flex-direction: column;
  align-items:center;
  margin: 0 auto;
  padding: 10px;
  border: 1px solid black;
}

input[type="search"] {
  height: 30px;
}

.images {
  border: 1px red solid;
  margin: 0 auto;
  text-align: center;
}
<div class=container>
  <div class="images">
    <a href="photos/thumbnails/01.jpg" data-lightbox="image-1"><img src="photos/thumbnails/01.jpg" alt="Image 1"></a>
    <a href="photos/thumbnails/02.jpg" data-lightbox="image-2"><img src="photos/thumbnails/02.jpg" alt="Image 2"></a>
    <a href="photos/thumbnails/03.jpg" data-lightbox="image-3"><img src="photos/thumbnails/03.jpg" alt="Image 3"></a>
    <a href="photos/thumbnails/04.jpg" data-lightbox="image-4"><img src="photos/thumbnails/04.jpg" alt="Image 4"></a>
    <a href="photos/thumbnails/05.jpg" data-lightbox="image-5"><img src="photos/thumbnails/05.jpg" alt="Image 5"></a>
    <a href="photos/thumbnails/06.jpg" data-lightbox="image-6"><img src="photos/thumbnails/06.jpg" alt="Image 6"></a>
    <a href="photos/thumbnails/07.jpg" data-lightbox="image-7"><img src="photos/thumbnails/07.jpg" alt="Image 7"></a>
  </div>

</div>

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