CSS Styling Images
Learn how to style images using CSS.
Rounded Images
Use the border-radius property to create rounded images:
Thumbnail Images
Use the border property to create thumbnail images.
Thumbnail Image:
例子
img {
border: 1px solid #ddd;
border-radius: 4px;
padding: 5px;
width: 150px;
}
<img src="paris.jpg" alt="Paris">
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Thumbnail Image as Link:
例子
img {
border: 1px solid #ddd;
border-radius: 4px;
padding: 5px;
width: 150px;
}
img:hover {
box-shadow: 0 0 2px 1px rgba(0, 140, 186, 0.5);
}
<a href="paris.jpg">
<img src="paris.jpg" alt="Paris">
</a>
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Responsive Images
Responsive images will automatically adjust to fit the size of the screen.
Resize the browser window to see the effect:
If you want an image to scale down if it has to, but never scale up to be larger than its original size, add the following:
Tip: Read more about Responsive Web Design in our CSS RWD Tutorial.
Center an Image
To center an image, set left and right margin to auto and make it into a block element:
Polaroid Images / Cards
Cinque Terre
Northern Lights
例子
div.polaroid {
width: 80%;
background-color: white;
box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
}
img {width: 100%}
div.container {
text-align: center;
padding: 10px 20px;
}
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Transparent Image
The opacity property can take a value from 0.0 - 1.0. The lower value, the more transparent:
opacity 0.2
opacity 0.5
opacity 1
(default)
Image Text
How to position text in an image:
例子
Try it Yourself:
Top Left » Top Right » Bottom Left » Bottom Right » Centered »Image Filters
The CSS filter property adds visual effects (like blur and saturation) to an element.
Note: The filter property is not supported in Internet Explorer or Edge 12.
例子
Change the color of all images to black and white (100% gray):
img {
filter: grayscale(100%);
}
Tip: Go to our CSS filter Reference to learn more about CSS filters.
Image Hover Overlay
Create an overlay effect on hover:
Flip an Image
Move your mouse over the image:
Responsive Image Gallery
CSS can be used to create image galleries. This example use media queries to re-arrange the images on different screen sizes. Resize the browser window to see the effect:
例子
.responsive {
padding: 0 6px;
float: left;
width: 24.99999%;
}
@media only screen and (max-width: 700px){
.responsive {
width: 49.99999%;
margin: 6px 0;
}
}
@media only screen and (max-width: 500px){
.responsive {
width: 100%;
}
}
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Tip: Read more about Responsive Web Design in our CSS RWD Tutorial.
Image Modal (Advanced)
This is an example to demonstrate how CSS and JavaScript can work together.
First, use CSS to create a modal window (dialog box), and hide it by default.
Then, use a JavaScript to show the modal window and to display the image inside the modal, when a user clicks on the image:
例子
// Get the modal
var modal = document.getElementById('myModal');
// Get the image and insert it inside the modal - use its "alt" text as a caption
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;
captionText.innerHTML = this.alt;
}
// Get the <span> element that closes the modal
var span = document.getElementsByClassName("close")[0];
// When the user clicks on <span> (x), close the modal
span.onclick = function() {
modal.style.display = "none";
}
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