Fix headers on smaller screens
Fix headers on smaller screens

This is regarding the following issue: [Portfolio-Iro on Smaller Devices](https://github.com/Bloc/curriculum/issues/3096)
JoshSummerTop/joshsummertop.github.io,dwaite498/dwaite498.github.io,eflores0227/eflores0227.github.io,iBrunch/portfolio-iro,dwaite498/dwaite498.github.io,Bloc/portfolio-iro,jophinjohn/portfolio-iro-1,RobotMermaid/portfolio-iro,dwaite498/dwaite498.github.io,eflores0227/eflores0227.github.io,alexgould17/portfolio-iro,iBrunch/portfolio-iro,Bloc/portfolio-iro,RobotMermaid/portfolio-iro,jophinjohn/portfolio-iro-1,StephanieDunning/stephaniedunning.github.io,JoshSummerTop/joshsummertop.github.io,alexgould17/portfolio-iro,jophinjohn/portfolio-iro-1,StephanieDunning/stephaniedunning.github.io