First one

Hi, thank you for this and all other your classes, it helped me to build my very first web page, yey! Super happy, even though I didn't manage to get everything as I've designed. The white space at the bottom of the page is very upsetting, but I just can't see why it won't go away. Hope to get better at this. I'm attaching the link to my code // https://codesandbox.io/embed/ko9jmkxx0r //, would be great to hear some feedback. Thank you!
And designed page: