Force CSS to square image in a responsive container - html

Question

I have a responsive image grid background in my website.
All its working fine with perfectly square images but when one image is for example 1px height bigger, the grid breaks.
Example OK:
[H][H][H][H][H][H]
[H][H][H][H][H][H]
[H][H][H][H][H][H]
Example FAIL
[H][H][H][H][H][H]
[H][H][H][A][H][H]
[H][H]
[H][H][H][H][H][H]
I dont want to use mansory o other plugins, this is my code:
HTML
<div class="resp pull-left">
<img class="img-responsive indexUser" src="image.jpg">
</div>
CSS
.resp{
width:10%;
height:10%;
}
.resp img{
width:100%;
}
Im using Bootstrap 3. Is it possible to do it?
EDIT WITH MORE INFORMATION
I want to put only square pictures in order, sorry, without grid. The image containers are floating. This is the screenshot with the problem:
Is responsive and I need to use % in with to adjust perfectly fullscreen allways

Answer 1

There are two things you can try here that might answer your question. Of course, without seeing your code it's very hard to advise in a more in-depth fashion.
If you're using Boostratp, why not wrap each row of images in a row-fluid container and use it's grid system? This will at least ensure that you don't get the dirty float bug, although it also means that you'll get a little extra space underneath the child elements of that one taller one.
Or, set the parent anchor's height and set overflow: hidden. This will essentially cut off the bottom edge of the taller image, although you would have to work through your break points.
As a code example of point two above:
.resp a{
display: block;
max-height: 300px;
overflow: hidden;
}
Bear in mind that images in Bootstrap have max-width: 100% set to them automatically so they will always flow to the width of the container if wide enough.

Answer 2

You will probably need to provide a height and maybe even set overflow:hidden. Please provide more markup if you want a better answer.
This is one linked image in a div, not a grid:
<div class="resp pull-left">
<img class="img-responsive indexUser" src="image.jpg">
</div>

Answer 3

<figure><img src="images/edu.jpg"></figure>
figure img {
width: 100%;
}