diff --git a/air.css b/air.css
new file mode 100644
index 0000000..103cbe6
--- /dev/null
+++ b/air.css
@@ -0,0 +1,137 @@
+html {
+  font-size: 12px;
+}
+
+@media screen and (min-width: 32rem) and (max-width: 48rem) {
+  html {
+    font-size: 15px;
+  }
+}
+
+@media screen and (min-width: 48rem) {
+  html {
+    font-size: 16px;
+  }
+}
+
+body {
+  line-height: 1.85;
+}
+
+p,
+.air-p {
+  font-size: 1rem;
+  margin-bottom: 1.3rem;
+}
+
+h1,
+.air-h1,
+h2,
+.air-h2,
+h3,
+.air-h3,
+h4,
+.air-h4 {
+  margin: 1.414rem 0 .5rem;
+  font-weight: inherit;
+  line-height: 1.42;
+}
+
+h1,
+.air-h1 {
+  margin-top: 0;
+  font-size: 3.998rem;
+}
+
+h2,
+.air-h2 {
+  font-size: 2.827rem;
+}
+
+h3,
+.air-h3 {
+  font-size: 1.999rem;
+}
+
+h4,
+.air-h4 {
+  font-size: 1.414rem;
+}
+
+h5,
+.air-h5 {
+  font-size: 1.121rem;
+}
+
+h6,
+.air-h6 {
+  font-size: .88rem;
+}
+
+small,
+.air-small {
+  font-size: .707em;
+}
+
+/* https://github.com/mrmrs/fluidity */
+
+img,
+canvas,
+iframe,
+video,
+svg,
+select,
+textarea {
+  max-width: 100%;
+}
+
+body {
+  color: #444;
+  font-family: 'Open Sans', Helvetica, sans-serif;
+  font-weight: 300;
+  margin: 6rem auto 1rem;
+  max-width: 48rem;
+  text-align: left;
+}
+
+img {
+  border-radius: 50%;
+  height: 200px;
+  margin: 0 auto;
+  width: 200px;
+}
+
+a,
+a:visited {
+  color: #3498db;
+}
+
+a:hover,
+a:focus,
+a:active {
+  color: #2980b9;
+}
+
+pre {
+  background-color: #fafafa;
+  padding: 1rem;
+  text-align: left;
+}
+
+blockquote {
+  margin: 0;
+  border-left: 5px solid #7a7a7a;
+  font-style: italic;
+  padding: 1.33em;
+  text-align: left;
+}
+
+ul,
+ol,
+li {
+  text-align: left;
+}
+
+p {
+  color: #777;
+}