如何使图像居中和左对齐? [英] How can I center and left align images?

问题描述

我正在使用图片库，并且希望图像的容器完全位于页面的中心，但是图像保持对齐.

这是我想要的输出:

但是，当我尝试在容器上执行 text-align:center (id: gallery )时，我得到的图像显示如下:

我尝试过跟前一个堆栈溢出问题有关的问题:

我该怎么做才能实现所需的输出?

HTML

 < div id ="gallery">< div id ="images">< div class ="container">< a href ="images/gallery/image1.jpg" data-lightbox ="mygallery">< img src ="images/gallery/image1.jpg">< div class ="overlay">< img src ="images/magnify.png"></div></a></div>< div class ="container">< a href ="images/gallery/image2.jpg" data-lightbox ="mygallery">< img src ="images/gallery/image2.jpg">< div class ="overlay">< img src ="images/magnify.png"></div></a></div></div></div> 

CSS

  #gallery {文本对齐:居中；}#图片{显示:inline-block;文字对齐:左；}img {宽度:300像素；光标:指针；}.overlay {位置:绝对；正确:0；左:0；光标:指针；可见性:隐藏；颜色:透明；最高:0;底部:0;宽度:100％;高度:100％;过渡:所有缓入.3s；}.overlay>img {高度:50％;宽度:50％;最高:50％；可见性:隐藏；左:50％；转换:translate(-50％，-50％);位置:绝对；}.overlay:hover>img {能见度:可见；}.容器 {职位:相对显示:inline-block;边距:5px;}.container:hover .overlay {能见度:可见；不透明度:.6;背景:黑色；白颜色;} 

解决方案

给您的 #gallery div 最大宽度， text-align:center 和 margin:auto ，然后将标题放在 #gallery 内，但在 #images 之外的另一个div中.然后在 #images div上放置 text-align:left .

请参见下面的示例:

  #gallery {文本对齐:居中；最大宽度:420px；保证金:自动；}img {宽度:100px；光标:指针；}.容器 {显示:inline-block;}#图片 {文字对齐:左}  

 < div id ="gallery">< div id ="header">< h1>标头</h1></div>< div id ="images">< div class ="container">< a href ="http://thecatapi.com/api/images/get?id=d42">< img src ="http://thecatapi.com/api/images/get?id=d42"></a></div>< div class ="container">< a href ="http://thecatapi.com/api/images/get?id=21o">< img src ="http://thecatapi.com/api/images/get?id=21o"></a></div>< div class ="container">< a href ="http://thecatapi.com/api/images/get?id=49e">< img src ="http://thecatapi.com/api/images/get?id=49e"></a></div>< div class ="container">< a href ="http://thecatapi.com/api/images/get?id=13v">< img src ="http://thecatapi.com/api/images/get?id=13v"></a></div>< div class ="container">< a href ="http://thecatapi.com/api/images/get?id=6e6">< img src ="http://thecatapi.com/api/images/get?id=6e6"></a></div>< div class ="container">< a href ="http://thecatapi.com/api/images/get?id=4bf">< img src ="http://thecatapi.com/api/images/get?id=4bf"></a></div></div></div>  

I am working on an image gallery and want have the image's container be completely centered on the page, but the images are left aligned.

This is my desired output:

However, when I try to do a text-align: center on the container(id: gallery) I am getting the images displayed like this:

I tried following suit with a previous stack overflow question: CSS: Center block, but align contents to the left and wrap the images in another div then align it with display: inline-block; and text-align: left; but the images just seem to align left on the entire page:

What can I do to accomplish my desired output?

HTML

 <div id="gallery">
     <div id="images">
        <div class="container">
            <a href="images/gallery/image1.jpg" data-lightbox="mygallery">
                <img src="images/gallery/image1.jpg">           
            <div class="overlay">
                <img src="images/magnify.png">
            </div>
               </a>
        </div>
        <div class="container">
            <a href="images/gallery/image2.jpg" data-lightbox="mygallery">
            <img src="images/gallery/image2.jpg">
            <div class="overlay">
                <img src="images/magnify.png">
            </div>
            </a>
          </div>
        </div>
    </div>

CSS

#gallery{
    text-align: center;
}
#images{
    display: inline-block;
    text-align: left;
}
img{
    width: 300px;
    cursor: pointer;
}
.overlay  {
    position: absolute;
    right: 0;
    left: 0;
    cursor: pointer;
    visibility: hidden;
    color: transparent;
    top: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    transition: all ease-in .3s;
}
.overlay > img{
    height: 50%;
    width: 50%;
    top: 50%; 
    visibility: hidden;
    left: 50%;
    transform: translate(-50%,-50%);
    position: absolute;   
}
.overlay:hover > img{
    visibility: visible; 
}
.container {
    position: relative;
    display: inline-block;
    margin: 5px;
}
.container:hover .overlay  {
    visibility: visible;
    opacity: .6;
    background: black;
    color: white;   
}

解决方案

Give your #gallery div a max-width, text-align: center, and margin:auto, then put your header in another div inside the #gallery, but outside the #images. Then put text-align: left on your #images div.

See example below:

#gallery {
  text-align: center;
  max-width: 420px;
  margin: auto;
}

img {
  width: 100px;
  cursor: pointer;
}

.container {
  display: inline-block;
}

#images {
  text-align: left
}

<div id="gallery">
  <div id="header">
    <h1>Header</h1>
  </div>
  <div id="images">
    <div class="container">
      <a href="http://thecatapi.com/api/images/get?id=d42">
        <img src="http://thecatapi.com/api/images/get?id=d42">
      </a>
    </div>
    <div class="container">
      <a href="http://thecatapi.com/api/images/get?id=21o">
        <img src="http://thecatapi.com/api/images/get?id=21o">
      </a>
    </div>
    <div class="container">
      <a href="http://thecatapi.com/api/images/get?id=49e">
        <img src="http://thecatapi.com/api/images/get?id=49e">
      </a>
    </div>
    <div class="container">
      <a href="http://thecatapi.com/api/images/get?id=13v">
        <img src="http://thecatapi.com/api/images/get?id=13v">
      </a>
    </div>
    <div class="container">
      <a href="http://thecatapi.com/api/images/get?id=6e6">
        <img src="http://thecatapi.com/api/images/get?id=6e6">
      </a>
    </div>
    <div class="container">
      <a href="http://thecatapi.com/api/images/get?id=4bf">
        <img src="http://thecatapi.com/api/images/get?id=4bf">
      </a>
    </div>
  </div>
</div>

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