Store - Custom set up for product description, size, add to cart and quantity button.

Site URL: https://www.rimzee.com/store/p/grindingishard

Hello

I wanted to ask if it is possible to customize my store to something similar to the screenshots below.

At the moment I think it's quite bulky and would like to streamline the description.

I would also like the SIZE, ADD TO CART and QUANTITY boxes to be the same size and in line with eachother.

Here is an example of what I would like to achieve.

Wondering if this is possible?  

Many thanks

Robin