Toast notifications.

components/common/Toast.js

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+import React, { useEffect } from 'react';
+import ReactDOM from 'react-dom';
+import { useSpring, animated } from 'react-spring';
+import styles from './Toast.module.css';
+import Icon from 'components/common/Icon';
+import Close from 'assets/times.svg';
+
+export default function Toast({ message, timeout = 3000, onClose }) {
+  const props = useSpring({
+    opacity: 1,
+    transform: 'translate3d(0,0px,0)',
+    from: { opacity: 0, transform: 'translate3d(0,-40px,0)' },
+  });
+
+  useEffect(() => {
+    setTimeout(onClose, timeout);
+  }, []);
+
+  return ReactDOM.createPortal(
+    <animated.div className={styles.toast} style={props} onClick={onClose}>
+      <div className={styles.message}>{message}</div>
+      <Icon className={styles.close} icon={<Close />} size="small" />
+    </animated.div>,
+    document.getElementById('__modals'),
+  );
+}

components/common/Toast.module.css

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+.toast {
+  position: absolute;
+  top: 30px;
+  left: 0;
+  right: 0;
+  width: 300px;
+  border-radius: 5px;
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  padding: 8px 16px;
+  color: var(--gray50);
+  background: var(--green400);
+  margin: auto;
+  z-index: 2;
+  cursor: pointer;
+}
+
+.message {
+  font-size: var(--font-size-normal);
+}
+
+.close {
+  margin-left: 20px;
+}