Learn how to style images using CSS.
Use the border-radius
property to create rounded images:
Use the border
property to create thumbnail images.
Thumbnail Image:
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:
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 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.
To center an image, set left and right margin to auto
and make it into a block
element:
img {
display: block;
margin-left: auto;
margin-right: auto;
width: 50%;
}
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Cinque Terre
Northern Lights
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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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)
How to position text in an image:
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Top Left » Top Right » Bottom Left » Bottom Right » Centered »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.
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.
Create an overlay effect on hover:
Move your mouse over the image:
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:
.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.
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:
// 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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