add buttons and spinner

src/components/atoms/Button.module.scss

@@ -0,0 +1,71 @@
+@import '../../styles/variables';
+
+.button {
+    border: 0;
+    cursor: pointer;
+    outline: 0;
+    display: inline-block;
+    width: fit-content;
+    padding: $spacer / 4 $spacer;
+    font-family: $font-family-button;
+    font-size: $font-size-base;
+    font-weight: 600;
+    text-transform: uppercase;
+    border-radius: 2px;
+    transition: .2s ease-out;
+    color: $brand-white;
+    background: $brand-grey-light;
+    box-shadow: 0 9px 18px 0 rgba(0, 0, 0, .1);
+    min-height: 45px;
+    user-select: none;
+
+    &:hover,
+    &:focus {
+        color: $brand-white;
+        background: $brand-grey-light;
+        text-decoration: none;
+        transform: translate3d(0, -.05rem, 0);
+        box-shadow: 0 12px 30px 0 rgba(0, 0, 0, .1);
+    }
+
+    &:active {
+        background: $brand-grey-light;
+        transition: none;
+        transform: none;
+        box-shadow: 0 5px 18px 0 rgba(0, 0, 0, .1);
+    }
+
+    &:disabled {
+        color: rgba($brand-white, .7);
+        cursor: not-allowed;
+        pointer-events: none;
+        opacity: .8;
+    }
+}
+
+.buttonPrimary {
+    composes: button;
+    background: $brand-gradient;
+
+    &:hover,
+    &:focus {
+        background: $brand-gradient;
+    }
+
+    &:active {
+        background: $brand-gradient;
+    }
+}
+
+.link {
+    border: 0;
+    outline: 0;
+    display: inline-block;
+    width: fit-content;
+    background: 0;
+    padding: 0;
+    color: $brand-pink;
+    font-size: $font-size-base;
+    box-shadow: none;
+    cursor: pointer;
+}

src/components/atoms/Button.test.js

@@ -0,0 +1,16 @@
+import React from 'react'
+import ReactDOM from 'react-dom'
+import Button from './Button'
+
+it('Button renders without crashing', () => {
+    const div = document.createElement('div')
+    ReactDOM.render(
+        <>
+            <Button>I am a button</Button>
+            <Button primary="true">I am a primary button</Button>
+            <Button href="https://hello.com">I am a button</Button>
+        </>,
+        div
+    )
+    ReactDOM.unmountComponentAtNode(div)
+})

src/components/atoms/Button.tsx

@@ -0,0 +1,34 @@
+import React, { PureComponent } from 'react'
+import styles from './Button.module.scss'
+
+interface IButtonProps {
+    children: string
+    primary?: boolean
+    link?: boolean
+    href?: string
+}
+
+export default class Button extends PureComponent<IButtonProps, any> {
+    public render() {
+        let classes
+        const { primary, link, href, children } = this.props
+
+        if (primary) {
+            classes = styles.buttonPrimary
+        } else if (link) {
+            classes = styles.link
+        } else {
+            classes = styles.button
+        }
+
+        return href ? (
+            <a href={href} className={classes} {...this.props}>
+                {children}
+            </a>
+        ) : (
+            <button className={classes} {...this.props}>
+                {children}
+            </button>
+        )
+    }
+}

src/components/atoms/Spinner.module.scss

@@ -0,0 +1,29 @@
+@import '../../styles/variables';
+
+.spinner {
+    position: relative;
+    text-align: center;
+    margin-bottom: $spacer / 2;
+
+    &:before {
+        content: '';
+        box-sizing: border-box;
+        position: absolute;
+        top: 0;
+        left: 50%;
+        width: 20px;
+        height: 20px;
+        margin-top: -10px;
+        margin-left: -10px;
+        border-radius: 50%;
+        border: 2px solid $brand-purple;
+        border-top-color: $brand-violet;
+        animation: spinner .6s linear infinite;
+    }
+}
+
+@keyframes spinner {
+    to {
+        transform: rotate(360deg);
+    }
+}

src/components/atoms/Spinner.tsx

@@ -0,0 +1,6 @@
+import React from 'react'
+import styles from './Spinner.module.scss'
+
+const Spinner = () => <div className={styles.spinner} />
+
+export default Spinner

src/pages/Home.module.scss

@@ -7,4 +7,10 @@
     display: flex;
     align-items: center;
     justify-content: center;
+    flex-wrap: wrap;
+
+    > div {
+        text-align: center;
+        width: 100%;
+    }
 }

src/pages/Home.tsx

@@ -1,9 +1,20 @@
 import React, { Component } from 'react'
+import Button from '../components/atoms/Button'
 import styles from './Home.module.scss'
 
 class Home extends Component {
     public render() {
-        return <div className={styles.home}>Home</div>
+        return (
+            <div className={styles.home}>
+                <div>Home</div>
+
+                <Button>I am a button</Button>
+                <Button primary={true}>I am a primary button</Button>
+                <Button href="https://hello.com">
+                    I am a link disguised as a button
+                </Button>
+            </div>
+        )
     }
 }