Prevent buttons from overlapping on smaller screens

I have two buttons side-by-side that seem to be overlapping when the screen size is reduced. What code can I use to prevent it from happening? Thanks!

Hi,

What is page url?

@tuanphan woops totally forgot the URL! 

#1. You try changing top section to Classic Section & check again

#2. If you don't want to change to Classic, which screen sizes do you see problem? We will use code to make space between both

@tuanphan I'd like to keep using the Fluid Engine for this section! I don't know what the exact screen size is, but less than 1200px width and the buttons definitely start to overlap - such as in the default Squarespace dashboard view when the left side panel is taking up some of the width in a browser.