A tricky one! The last one of the challenges is definitely not the easiest. It took me a while but I did come up with a nice idea: a website where people can share their dreams to inspire others. A dreamy feel to it was harder to create. I do like the end result but I realise the contrast is low and thus it can be hard to read for people with eye trouble like colour blindness, so I added a button for a high contrast version.
It is responsive. Below you can see the computer screen and the mobile version.