https://codepen.io/Zubenna/full/MeWVmR/ When viewed on mobile, Menu button does not appear with a background color. Secondly the freecodecamp button overshoots it column. How will I resolve that please.
You will have to use media queries. On xs screen add background color to li tag for menus and to fix button, you can reduce the left and right margin on .homeIntroduction class from 50 to 10 or whatever suits.