Add styling that improves readability

- article content with a max-width, + index page
- code sections are bordered, indented and padded
- figure captions are centered along with the images
- h2 margin is only removed in non-articles; the post index page
- main with extra space at the bottom to allow scolling past content

client/public/assets/styling/general.css

@@ -17,6 +17,28 @@ nav {
   border-bottom-right-radius: 5px;
 }
 
+main {
+  padding-bottom: 12em;
+}
+
+article {
+  max-width: 1000px;
+  margin: auto;
+}
+
+pre {
+  padding: 1em;
+  padding-left: 2em;
+  border: solid;
+  border-radius: 1em;
+  border-width: 1px;
+  border-color: var(--text-color);
+}
+
+.figure > p {
+  text-align: center;
+}
+
 .question {
   font-style: italic;
 }
@@ -27,6 +49,9 @@ h1 {
 
 h2 {
   font-size: 1.25em;
+}
+
+main > h2 {
   margin: auto 0;
 }
 

client/public/index.lisp

@@ -22,6 +22,7 @@
         (a :href "/" "Home") "|"
         (a :href "/posts" "Posts") "|"
         (a :href "/qa" "QA"))
+      (article
         (header
           (h1 "Home"))
         (p "Hi there, good to see you on my website.
@@ -32,4 +33,4 @@
 
         (p "The projects that may be useful to others are open source; for inspiring others and improving each others work.
             That is why I am a huge fan of "
-        (a :href "https://www.gnu.org/philosophy/free-sw.en.html" "free software")))))
+          (a :href "https://www.gnu.org/philosophy/free-sw.en.html" "free software"))))))