só css

• In index.html the h1 tag is missing the 1 from the closing tag.

<h1>Improve your front-end skills en by building projects</h>

Should be

<h1>Improve your front-end skills by building projects</h1>

• Add colour and padding to h1 in style.css
• Add padding to paragraph text in style.css

h1

h1 {
  padding: 0px;
}

Should be

h1 {
   padding: 0px 20px 15px;
   color: hsl(218, 44%, 22%);
}

p

p {
   padding: 0px 20px 15px;
}

I'm not exactly sure if this the the best way to add padding but it looks more like the original design :)

Codepen link to updated code