Styling updates and add social links

_includes/styles/base.css

@@ -0,0 +1,76 @@
+html,
+body {
+	padding: 0;
+	margin: 0 auto;
+}
+html {
+	overflow-y: scroll;
+}
+body {
+	max-width: 660px;
+}
+
+h1 {
+  font-size: 32px;
+}
+
+h2 {
+  font-size: 24px;
+}
+
+ol {
+  margin: 0;
+  padding-left: 20px;
+}
+
+hr {
+  margin: 20px 0 0 0;
+}
+
+article > h1 {
+  margin-bottom: 0;
+}
+
+nav > h2 {
+  margin-bottom: 0;
+}
+
+nav > ul {
+  margin: 10px;
+}
+
+footer {
+  margin: 20px 0;
+}
+
+footer img {
+  height: 24px;
+}
+
+.about {
+  font-size: 14px;
+  margin-left: 12px;
+}
+
+.simple-list {
+  list-style: none;
+  padding: 0;
+}
+
+.site-nav > ul {
+  display: flex;
+  justify-content: space-between;
+}
+
+.socials > ul {
+  display: flex;
+  gap: 12px;
+}
+
+.post-link {
+  margin-bottom: 12px;
+}
+
+.post-link > p {
+  margin: 0;
+}