In html, how to stretch an image in only one dimension? - html

Question

Let's say that I want to fit an 10*60 image into a 15*15 container. That is to say, I want to stretch my image so that the width correspond (so that would be an image of 15*90), but I do not want the height to stretch more than the width, so the bottom of my image will not appear.
When I define my html image, I put an width=100% to stretch the width, but what do I say to the height?
Thank you !

Answer 1

You can simply use a background image and set its background-size property to contain (or cover, depends what you need).
.container {
background: url(http://via.placeholder.com/350x300) no-repeat center center orange;
background-size: contain;
animation-duration: 3s;
animation-name: changewidth;
animation-iteration-count: infinite;
animation-direction: alternate;
}
#keyframes changewidth {
from {
width: 100px;
height: 300px
}
to {
width: 300px;
height: 100px
}
}
<div class="container"></div>

Answer 2

You can also position the image absolute, so you can do something like this:
.embed.ratio-16-9
img
.embed {
position: relative;
height: 0;
overflow: hidden;
max-width: 100%;
img {
position: absolute;
top: 0;
left: 0;
right: 0;
min-width: 100%;
}
.ratio-16-9 {
padding-bottom: 56.25%;
}
The image height should no longer be stuck to you block.

Answer 3

If I understood the question correctly, you don't have to specify any value on the height property. Just set overflow:hidden on your container if you don't want the overflowing part of the image to show. Hope this helps.

Answer 4

CSS background-image with background-size: cover
You should use CSS background-image property for this kind of styling your web elements.
What you're looking for is probably the background-size: cover;. What it does is it fits the image based on width of the container.
CSS:
.cont {
width: 200px;
height: 200px;
background-image: url('urlToImage100x300.jpg');
background-size: cover;
}
HTML:
<div class="cont"></div>
Also, if you want to center your image vertically use background-position-y: center;.
.cont {
width: 200px;
height: 200px;
background-image: url('urlToImage100x300.jpg');
background-size: cover;
background-position-y: center;
}
HTML img tag
If you really need to use an <img /> tag for this operation; What you need is to put the image into container, then set the width, height to your desired size and overflow-y to hidden. After that, set the width of an img to 100% and it's done.
CSS:
.cont {
width: 200px;
height: 200px;
overflow-y: hidden;
}
.cont img {
width: 100%;
}
HTML:
<div class="cont"><img src="image100x300.jpg" /></div>
Working demo CSS w/o y-axis center: https://jsfiddle.net/e2vt3sw6/
Working demo CSS w/ y-axis center: https://jsfiddle.net/e2vt3sw6/1/
Working demo HTML img tag: https://jsfiddle.net/e2vt3sw6/2/
Tests where made using 150x300px image and 200x200px container