Add tabIndex's to a few sections to make it less jarring

Author: davidcsally

src/components/modules/AboutMe/index.tsx

@@ -83,7 +83,7 @@ const AboutMe = () => {
   return (
     <Container data-testid="about-me">
       <MaxWidth>
-        <H2>About Me</H2>
+        <H2 tabIndex={0}>About Me</H2>
         <Column>
           <TextSection />
           <SquareRatio max="500px">

src/components/modules/App/index.tsx

@@ -9,7 +9,6 @@ import SupremeBlock from '../SupremeBlock'
 import AboutMe from '../AboutMe'
 import PortfolioBlock from '../PortfolioBlock'
 import Footer from '../Footer'
-import TechnologySection from '../TechnologySection'
 
 const COOKIE = 'acceptedCookies=true'
 

src/components/modules/PortfolioBlock/index.tsx

@@ -44,7 +44,7 @@ const Container = styled.section`
 const PortfolioBlock = () => (
   <Container data-testid="portfolio-module">
     <MaxWidth>
-      <H2>Stuff I&apos;ve done</H2>
+      <H2 tabIndex={0}>Stuff I&apos;ve done</H2>
       <List>
         {data.map((item, index) => (
           <PortfolioItem