refactor notes directory and front matter

notes/css-waving-hand-emoji/index.mdx

@@ -0,0 +1,55 @@
+import featuredImage from "./codepen.png";
+
+export const frontmatter = {
+  title: "Animated Waving Hand Emoji 👋 Using CSS",
+  date: "2019-04-17 14:20:10-0400",
+  description: "How to make the 👋 waving hand emoji actually wave using pure CSS animation!",
+  tags: ["CSS", "Animation", "Emoji", "Keyframes", "Cool Tricks"],
+  image: featuredImage.src,
+};
+
+## Howdy, friends! 👋
+
+If you examine [my homepage](/) long enough, you might notice the 👋 hand emoji at the top subtly waving at you. This was easily accomplished using a few lines of CSS with a feature called [`@keyframes`](https://developer.mozilla.org/en-US/docs/Web/CSS/@keyframes) — no bulky GIFs involved, and no JS mess or jQuery overkill required.
+
+Below are the code snippets you can grab and customize to make your own ["waving hand" 👋](https://emojipedia.org/waving-hand-sign/) emojis **_actually wave_**, and a [CodePen playground](https://codepen.io/jakejarvis/pen/pBZWZw) for live testing.
+
+## Demo
+
+<CodePen username="jakejarvis" id="pBZWZw" defaultTab="css" />
+
+## CSS
+
+{/* prettier-ignore */}
+```css showLineNumbers
+.wave {
+  animation-name: wave-animation;  /* Refers to the name of your @keyframes element below */
+  animation-duration: 2.5s;        /* Change to speed up or slow down */
+  animation-iteration-count: infinite;  /* Never stop waving :) */
+  transform-origin: 70% 70%;       /* Pivot around the bottom-left palm */
+  display: inline-block;
+}
+
+@keyframes wave-animation {
+    0% { transform: rotate( 0.0deg) }
+   10% { transform: rotate(14.0deg) }  /* The following five values can be played with to make the waving more or less extreme */
+   20% { transform: rotate(-8.0deg) }
+   30% { transform: rotate(14.0deg) }
+   40% { transform: rotate(-4.0deg) }
+   50% { transform: rotate(10.0deg) }
+   60% { transform: rotate( 0.0deg) }  /* Reset for the last half to pause */
+  100% { transform: rotate( 0.0deg) }
+}
+```
+
+## HTML
+
+```html
+<h1>Hi there! <span class="wave">👋</span></h1>
+```
+
+---
+
+That's it! More hands and skin tones can be [found on 📕 Emojipedia](https://emojipedia.org/search/?q=waving+hand).
+
+**👋🏼 Toodles!**