Can I use width 50px and 50℅ ?

Question

Just curious to know

Answer 1

Ofcourse you can use both.
Just know that 50px means setting the width to 50px size, while 50% means half of the original size of content or half of the current page size..

Answer 2

you cant use them together in a same tag, but usage of one of them is possible in a tag. if at all, you use both of them in a single tag, it takes the first attribute value only.