I like the design and layout. Simple design and layouts are the best.
It has some very small issues.
First check the very first checkbox button, it has no label tag associated, fix it.
I personally prefer radio button at the left, and text(label) at the right. but this is my opinion, you may ignore.
Also remove that circle list style shape before checkbox and radio buttons. I’m not sure if using list is good for this, you may just using div tag.
combobox has a disabled option, but it’s not selected by default, fix it.
I think elements are so tight and near to each other. Add some space between them. They are so small too, make them bigger.
Checking this survey form challenge walkthrough article also could be helpful about more tips and more details about the issues your page have.
Overall I liked the work, looks cool!
Keep goin on great work, happy programming.