I want an image to fill the 100% of its container\'s width, and I want it to have a max-heigth property set to it, all this keeping the aspect ratio but allowing to lose any
You can try CSS3 object-fit, and see browser support tables.
CSS3
object-fit/object-positionMethod of specifying how an object (image or video) should fit inside its box. object-fit options include "contain" (fit according to aspect ratio), "fill" (stretches object to fill) and "cover" (overflows box but maintains ratio), where object-position allows the object to be repositioned like background-image does.
JSFIDDLE DEMO
.container {
width: 200px; /*any size*/
height: 200px; /*any size*/
}
.object-fit-cover {
width: 100%;
height: 100%;
object-fit: cover; /*magic*/
}
Related Info:
Exploring object-fit ★ Mozilla Hacks
Polyfill for CSS object-fit property