Automatically resize images with browser size using CSS
CssResizeResponsive DesignCss Problem Overview
I want all (or just some) of my images getting resized automatically when I resize my browser window. I've found the following code - it doesn't do anything though.
HTML
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<link rel="stylesheet" href="style.css" type="text/css" media="screen" />
</head>
<body>
<div id="icons">
<div id="contact">
<img src="img/icon_contact.png" alt="" />
</div>
<img src="img/icon_links.png" alt="" />
</div>
</body>
</html>
CSS
body {
font-family: Arial;
font-size: 11px;
color: #ffffff;
background: #202020 url(../../img/body_back.jpg) no-repeat top center fixed;
background-size: cover;
}
#icons {
position: absolute;
bottom: 22%;
right: 8%;
width: 400px;
height: 80px;
z-index: 8;
transform: rotate(-57deg);
-ms-transform: rotate(-57deg);
-webkit-transform: rotate(-57deg);
-moz-transform: rotate(-57deg);
}
#contact {
float: left;
cursor: pointer;
}
img {
max-width: 100%;
height: auto;
}
How can I basically have a fullscreen design (with background-size: cover) and have div elements be at exactly the same position (% wise) when resizing the browser window, with their size also resizing (like cover is doing for the background)?
Css Solutions
Solution 1 - Css
> To make the images flexible, simply add max-width:100% and
> height:auto. Image max-width:100% and height:auto works in IE7,
> but not in IE8 (yes, another weird IE bug). To fix this, you need to
> add width:auto\9 for IE8.
>
> source:
> http://webdesignerwall.com/tutorials/responsive-design-with-css3-media-queries
for example :
img {
max-width: 100%;
height: auto;
width: auto\9; /* ie8 */
}
and then any images you add simply using the img tag will be flexible
JSFiddle example here. No JavaScript required. Works in latest versions of Chrome, Firefox and IE (which is all I've tested).
Solution 2 - Css
image container
Scaling images using the above trick only works if the container the images are in changes size.
The #icons container uses px values for the width and height. px values don't scale when the browser is resized.
Solutions
Use one of the following approaches:
- Define the width and/or height using
%values. - Use a series of
@mediaqueries to set the width and height to different values based on the current screen size.
Solution 3 - Css
This may be too simplistic of an answer (I am still new here), but what I have done in the past to remedy this situation is figured out the percentage of the screen I would like the image to take up. For example, there is one webpage I am working on where the logo must take up 30% of the screen size to look best. I played around and finally tried this code and it has worked for me thus far:
img {
width:30%;
height:auto;
}
That being said, this will change all of your images to be 30% of the screen size at all times. To get around this issue, simply make this a class and apply it to the image that you desire to be at 30% directly. Here is an example of the code I wrote to accomplish this on the aforementioned site:
the CSS portion:
.logo {
position:absolute;
right:25%;
top:0px;
width:30%;
height:auto;
}
the HTML portion:
<img src="logo_001_002.png" class="logo">
Alternatively, you could place ever image you hope to automatically resize into a div of its own and use the class tag option on each div (creating now class tags whenever needed), but I feel like that would cause a lot of extra work eventually. But, if the site calls for it: the site calls for it.
Hopefully this helps. Have a great day!
Solution 4 - Css
The following works on all browsers for my 200 figures, for any width percentage -- despite being illegal. Jukka said 'Use it anyway.' (The class just floats the image left or right and sets margins.) I can't imagine why this isn't the standard approach!
<img class="fl" width="66%"
src="A-Images/0.5_Saltation.jpg"
alt="Schematic models of chromosomes ..." />
Change the window width and the image scales obligingly.