Hi Gonzalo,
I made it work.
I did not polish the example but you will get the idea:
.col {
height: 100vh;
}
.thumbnail-wrap {
height: 100%;
}
.thumb {
height: 100%;
}
.lay-textformat-parent {
position: absolute;
bottom: 1vw;
}
0_1517543740182_Bildschirmfoto 2018-02-02 um 01.55.28.png
You need a big image next to it. Otherwise the Thumbnail will behave differently.
It can also be a narrow, height, white bar as JPG.
Then you might need to adjust some things. But I think this is the way I would go.
All the best!
Marius