Add <GithubCorner /> component

src/App.js

@@ -9,6 +9,7 @@ import NoMatch from './views/NoMatch'
 import Nav from './components/Nav'
 import NavLink from './components/NavLink'
 import Logo from './components/Logo'
+import GithubCorner from './components/GithubCorner'
 import globalStyles from './globalStyles'
 
 const siteTitle = 'HyperStatic'
@@ -36,6 +37,7 @@ class App extends Component {
       <Router>
         <div>
           <ScrollToTop />
+          <GithubCorner url='https://github.com/Jinksi/hyperstatic' />
           <Helmet titleTemplate={`${siteTitle} | %s`} />
           <Nav>
             <Logo>

src/components/GithubCorner.js

@@ -0,0 +1,57 @@
+import React from 'react'
+import styled from 'styled-components'
+
+const GithubCorner = styled.a`
+  position: absolute;
+  top: 0;
+  right: 0;
+  z-index: 1;
+
+  svg {
+    fill: #151513;
+    color: #fff;
+    border: 0;
+  }
+
+  .octo-arm {
+    transform-origin: 130px 106px;
+  }
+
+  &:hover .octo-arm {
+    animation: octocat-wave 560ms ease-in-out;
+  }
+
+  @keyframes octocat-wave {
+    0%, 100% {
+      transform: rotate(0);
+    }
+
+    20%, 60% {
+      transform: rotate(-25deg);
+    }
+
+    40%, 80% {
+      transform: rotate(10deg)
+    }
+  }
+
+  @media (max-width:500px) {
+    &:hover .octo-arm {
+      animation: none;
+    }
+
+    .octo-arm {
+      animation: octocat-wave 560ms ease-in-out;
+    }
+  }
+`
+
+export default ({ url }) => (
+  <GithubCorner href={url} aria-label='View source on Github'>
+    <svg width='80' height='80' viewBox='0 0 250 250' aria-hidden='true'>
+      <path d='M0,0 L115,115 L130,115 L142,142 L250,250 L250,0 Z' />
+      <path className='octo-arm' d='M128.3,109.0 C113.8,99.7 119.0,89.6 119.0,89.6 C122.0,82.7 120.5,78.6 120.5,78.6 C119.2,72.0 123.4,76.3 123.4,76.3 C127.3,80.9 125.5,87.3 125.5,87.3 C122.9,97.6 130.6,101.9 134.4,103.2' fill='currentColor' />
+      <path className='octo-body' d='M115.0,115.0 C114.9,115.1 118.7,116.5 119.8,115.4 L133.7,101.6 C136.9,99.2 139.9,98.4 142.2,98.6 C133.8,88.0 127.5,74.4 143.8,58.0 C148.5,53.4 154.0,51.2 159.7,51.0 C160.3,49.4 163.2,43.6 171.4,40.1 C171.4,40.1 176.1,42.5 178.8,56.2 C183.1,58.6 187.2,61.8 190.9,65.4 C194.5,69.0 197.7,73.2 200.1,77.6 C213.8,80.2 216.3,84.9 216.3,84.9 C212.7,93.1 206.9,96.0 205.4,96.6 C205.1,102.4 203.0,107.8 198.3,112.5 C181.9,128.9 168.3,122.5 157.7,114.1 C157.9,116.9 156.7,120.9 152.7,124.9 L141.0,136.5 C139.8,137.7 141.6,141.9 141.8,141.8 Z' fill='currentColor' />
+    </svg>
+  </GithubCorner>
+)