CSS a fixed-width image and one taking up the empty space - css

Question

I'm desperately trying to format two images side by side using CSS.
I want the first one to be fixed-size and the second one to take up the remaining width (but it should stop growing when it has the same height as the first one). This is my code:
<span style="height:80px; width:100%">
<img src="images/navicon.png" style="width:60px; height:60px; padding:10px 10px 10px 10px; "/>
<img src="images/logo.png" style="max-height:60px; padding: 10px 10px 10px 10px;" />
</span>
But instead of the second image shrinking (maintaining aspect-ratio) when there is not enough space, the line breaks.
Thanks for any help!

Answer 1

This possible solution requires CSS calc(), see the demo follows.
div {
height: 100px;
overflow: hidden;
font-size: 0;
}
span {
display: inline-block;
vertical-align: top;
}
span:nth-child(2) {
width: calc(100% - 100px);
}
span:nth-child(2) img {
width: 100%;
height: auto;
}
<div>
<span><img src="http://lorempixel.com/100/100" /></span>
<span><img src="http://lorempixel.com/100/100" /></span>
</div>
JSFiddle: http://jsfiddle.net/Low7k16d/

Answer 2

HTML:
<div class="image-container">
<div class="image"><img src="http://lorempixel.com/160/60/abstract/1"></div>
<div class="image image-auto"><img src="http://lorempixel.com/100/60/abstract/1"></div>
</div>
<div class="image-container">
<div class="image"><img src="http://lorempixel.com/60/60/abstract/1"></div>
<div class="image image-auto"><img src="http://lorempixel.com/1000/60/abstract/1"></div>
</div>
<div class="image-container">
<div class="image"><img src="http://lorempixel.com/1000/60/abstract/1"></div>
<div class="image image-auto"><img src="http://lorempixel.com/1500/600/abstract/1"></div>
</div>
CSS:
.image-container {
width: 100%;
display: flex;
align-items: flex-start;
}
.image {
margin: 10px;
padding: 0;
flex-shrink: 0;
}
.image img {
width: 100%;
margin: 0;
padding: 0;
max-height: 80px; /*Line added to limit height*/
}
.image-auto {
flex-shrink: 1;
height: auto;
}
And I updated the Pen: http://codepen.io/czoka/pen/XbJXVO

Answer 3

I don't completely understand your question but this is what I thought you mean.
NOTE: this is my updated version of sdcr's answer.
CSS:
div {
height: 80px;
font-size: 0;
}
span {
display: inline-block;
vertical-align: top;
padding:10px;
}
span:nth-child(1) img {
max-height: 60px;
}
span:nth-child(2) img {
width: 100%;
HTML
<div>
<span><img src="http://lorempixel.com/100/100" /></span>
<span><img src="http://lorempixel.com/output/people-q-c-924-67-9.jpg" /></span>
</div>
See jsfiddle:
http://jsfiddle.net/Low7k16d/4/