Convert to typescript

src/components/Button.tsx

@@ -0,0 +1,23 @@
+import styled from 'styled-components';
+
+const Button = styled.div`
+  cursor: pointer;
+  height: 100%;
+  display: flex;
+  align-items: center;
+  padding: 0 0.25em;
+  color: inherit;
+  text-decoration: none;
+
+  :hover {
+    background: ${props => props.theme.highlight};
+  }
+
+  @media (max-width: 640px) {
+    span {
+      display: none;
+    }
+  }
+`;
+
+export default Button;