Responsive page using bootstrap (failed on using BS)

I don't really know why i had hard moments to do this SIMPLE page, i tryied first to use bootstrap, i never used, so, i tryed to learn doing the challenge, and i couldn't complete with the Bootstrap, so i used more pure HTML/CSS than the BS itself. The code is very messy, in the middle of the challenge i thought about give up, or doing it from beginning, but i finished it like that, and i'm going to search another challenge that looks like that and improve. At least i tryed! Sorry for the messy code :(.