CSS images
This chapter will introduce how to use CSS to layout images.
Rounded corner picture
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>php中文网(php.cn)</title>
<style>
img {
border-radius: 20px;
}
</style>
</head>
<body>
<h2>圆角图片</h2>
<img src="/upload/course/000/000/006/580b170b612ba140.jpg" alt="Paris" width="400" height="300">
</body>
</html>Run the program and try it
Oval image:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>php中文网(php.cn)</title>
<style>
img {
border-radius: 50%;
}
</style>
</head>
<body>
<h2>椭圆形图片</h2>
<img src="/upload/course/000/000/006/580b170b612ba140.jpg" alt="Paris" width="400" height="300">
</body>
</html>Run the program to try it
Thumbnail
We use the border attribute to create thumbnails.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>php中文网(php.cn)</title>
<style>
img {
border: 1px solid #ddd;
border-radius: 4px;
padding: 5px;
}
</style>
</head>
<body>
<h2>缩略图</h2>
<img src="/upload/course/000/000/006/580b170b612ba140.jpg" alt="Paris" width="400" height="300">
</body>
</html>Run the program to try it
We use the border property to create thumbnails. Add a link outside the image.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>php中文网(php.cn)</title>
<style>
a {
display: inline-block;
border: 1px solid #ddd;
border-radius: 4px;
padding: 5px;
transition: 0.3s;
}
a:hover {
box-shadow: 0 0 2px 1px rgba(0, 140, 186, 0.5);
}
</style>
</head>
<body>
<h2>缩略图作为连接</h2>
<p>我们使用 border 属性来创建缩略图。在图片外层添加一个链接。</p>
<p>点击图片查看效果：</p>
<a target="_blank" href="/upload/course/000/000/006/580b170b612ba140.jpg">
<img src="/upload/course/000/000/006/580b170b612ba140.jpg" alt="Paris" width="400" height="300">
</a>
</body>
</html>Run the program and try it
Responsive pictures
Responsive pictures will automatically adapt Comes with screens of various sizes. If you need to freely scale the image, and the enlarged size of the image is not larger than its original maximum value, you can use the following code:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>php中文网(php.cn)</title>
<style>
img {
max-width: 100%;
height: auto;
}
</style>
</head>
<body>
<h2>响应式图片</h2>
<p>响应式图片会自动适配各种尺寸的屏幕。</p>
<p>通过重置浏览器大小查看效果:</p>
<img src="/upload/course/000/000/006/580b170b612ba140.jpg" alt="Norway" width="1000" height="300">
</body>
</html>Run the program and try it
Picture Modal(Modal)
This example demonstrates how to combine CSS and JavaScript to render images together.
First, we use CSS to create a modal window (dialog box), which is hidden by default.
Then, we use JavaScript to display the modal window. When we click on the image, the image will be displayed in the pop-up window:
Example
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>php中文网(php.cn)</title>
<style>
#myImg {
border-radius: 5px;
cursor: pointer;
transition: 0.3s;
}
#myImg:hover {opacity: 0.7;}
/* The Modal (background) */
.modal {
display: none; /* Hidden by default */
position: fixed; /* Stay in place */
z-index: 1; /* Sit on top */
padding-top: 100px; /* Location of the box */
left: 0;
top: 0;
width: 100%; /* Full width */
height: 100%; /* Full height */
overflow: auto; /* Enable scroll if needed */
background-color: rgb(0,0,0); /* Fallback color */
background-color: rgba(0,0,0,0.9); /* Black w/ opacity */
}
/* Modal Content (image) */
.modal-content {
margin: auto;
display: block;
width: 80%;
max-width: 700px;
}
/* Caption of Modal Image */
#caption {
margin: auto;
display: block;
width: 80%;
max-width: 700px;
text-align: center;
color: #ccc;
padding: 10px 0;
height: 150px;
}
/* Add Animation */
.modal-content, #caption {
-webkit-animation-name: zoom;
-webkit-animation-duration: 0.6s;
animation-name: zoom;
animation-duration: 0.6s;
}
@-webkit-keyframes zoom {
from {-webkit-transform: scale(0)}
to {-webkit-transform: scale(1)}
}
@keyframes zoom {
from {transform: scale(0.1)}
to {transform: scale(1)}
}
/* The Close Button */
.close {
position: absolute;
top: 15px;
right: 35px;
color: #f1f1f1;
font-size: 40px;
font-weight: bold;
transition: 0.3s;
}
.close:hover,
.close:focus {
color: #bbb;
text-decoration: none;
cursor: pointer;
}
/* 100% Image Width on Smaller Screens */
@media only screen and (max-width: 700px){
.modal-content {
width: 100%;
}
}
</style>
</head>
<body>
<h2>图片模态框</h2>
<p>本实例演示了如何结合 CSS 和 JavaScript 来一起渲染图片。</p><p>
首先，我们使用 CSS 来创建 modal 窗口 (对话框), 默认是隐藏的。<p>
<p>然后，我们使用 JavaScript 来显示模态窗口，当我们点击图片时，图片会在弹出的窗口中显示：</p>
<img id="myImg" src="/upload/course/000/000/006/580b170b612ba140.jpg" alt="Northern Lights, Norway" width="300" height="200">
<!-- The Modal -->
<div id="myModal" class="modal">
<span class="close">×</span>
<img class="modal-content" id="img01">
<div id="caption"></div>
</div>
<script>
// 获取模态窗口
var modal = document.getElementById('myModal');
// 获取图片模态框，alt 属性作为图片弹出中文本描述
var img = document.getElementById('myImg');
var modalImg = document.getElementById("img01");
var captionText = document.getElementById("caption");
img.onclick = function(){
modal.style.display = "block";
modalImg.src = this.src;
modalImg.alt = this.alt;
captionText.innerHTML = this.alt;
}
// 获取 <span> 元素，设置关闭模态框按钮
var span = document.getElementsByClassName("close")[0];
// 点击 <span> 元素上的 (x), 关闭模态框
span.onclick = function() {
modal.style.display = "none";
}
</script>
</body>
</html>Run the program and try it
