[html] Why does flexbox stretch my image rather than retaining aspect ratio?

Flexbox has this behaviour where it stretches images to their natural height. In other words, if I have a flexbox container with a child image, and I resize the width of that image, the height doesn't resize at all and the image gets stretched.

_x000D_
_x000D_
div {_x000D_
  display: flex; _x000D_
  flex-wrap: wrap;_x000D_
}_x000D_
img{ _x000D_
  width: 50%_x000D_
}
_x000D_
<div>_x000D_
    <img src="https://loremflickr.com/400/300" >_x000D_
    <h4>Appify</h4>_x000D_
    <p> some text </p>_x000D_
</div>
_x000D_
_x000D_
_x000D_

What causes this?

I added This CodePen to demonstrate what I mean.

This question is related to html css flexbox

The answer is


I faced the same issue with a Foundation menu. align-self: center; didn't work for me.

My solution was to wrap the image with a <div style="display: inline-table;">...</div>


Adding margin to align images:

Since we wanted the image to be left-aligned, we added:

img {
  margin-right: auto;
}

Similarly for image to be right-aligned, we can add margin-right: auto;. The snippet shows a demo for both types of alignment.

Good Luck...

_x000D_
_x000D_
div {_x000D_
  display:flex; _x000D_
  flex-direction:column;_x000D_
  border: 2px black solid;_x000D_
}_x000D_
_x000D_
h1 {_x000D_
  text-align: center;_x000D_
}_x000D_
hr {_x000D_
  border: 1px black solid;_x000D_
  width: 100%_x000D_
}_x000D_
img.one {_x000D_
  margin-right: auto;_x000D_
}_x000D_
_x000D_
img.two {_x000D_
  margin-left: auto;_x000D_
}
_x000D_
<div>_x000D_
  <h1>Flex Box</h1>_x000D_
  _x000D_
  <hr />_x000D_
  _x000D_
  <img src="https://via.placeholder.com/80x80" class="one" _x000D_
  />_x000D_
  _x000D_
  _x000D_
  <img src="https://via.placeholder.com/80x80" class="two" _x000D_
  />_x000D_
  _x000D_
  <hr />_x000D_
</div>
_x000D_
_x000D_
_x000D_


It is stretching because align-self default value is stretch. there is two solution for this case : 1. set img align-self : center OR 2. set parent align-items : center

img {

   align-self: center
}

OR

.parent {
  align-items: center
}

The key attribute is align-self: center:

_x000D_
_x000D_
.container {_x000D_
  display: flex;_x000D_
  flex-direction: column;_x000D_
}_x000D_
_x000D_
img {_x000D_
  max-width: 100%;_x000D_
}_x000D_
_x000D_
img.align-self {_x000D_
  align-self: center;_x000D_
}
_x000D_
<div class="container">_x000D_
    <p>Without align-self:</p>_x000D_
    <img src="http://i.imgur.com/NFBYJ3hs.jpg" />_x000D_
    <p>With align-self:</p>_x000D_
    <img class="align-self" src="http://i.imgur.com/NFBYJ3hs.jpg" />_x000D_
</div>
_x000D_
_x000D_
_x000D_


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