This Single Page Application has been made based on this tutorial, but with the following changes: - I apply relative measurements (rem instead of px) which basically allows us to have a better responsive web design. - I reduce redundant code, specially when specifying margins, paddings because it is usually applied with the all possible values (top, right, bottom and left). - I changed the color palette and also I used variables to store their values so it's easy to change the theme itself. - I've made some changes, for example, in mobile view, you can see a "sticky" tittle in the services and projects section.