The blue box and the text are child elements of the element that has a photo background. The child elements do not inherit the opacity setting on the parent. This is done using a jedi mind trick, aka "JavaScript".
The rest of this is just filler text. Don't read this, you're just wasting your time. Are you serious? You're still reading? I'm not lying, this is just filler. I just need this to wrap below the box. That's all.