Add new article, adjust the CSS slightly

articles/Contributing to spmenu.md

@@ -0,0 +1,40 @@
+# Contributing to spmenu
+
+Some tips for contributing to the wiki.
+For contributing to the wiki, see [[Contributing to the wiki]].
+
+## Hacking
+
+- When making changes to the Markdown files (except README.md),
+you **must** run `scripts/spmenu_make docs` before commiting.
+This command will generate new documentation using pandoc.
+
+## Licensing
+
+- All contributions to the documentation are licensed under the
+CC-BY-SA 4.0 license.
+- All contributions made to the codebase are licensed under the
+MIT license.
+
+## Before submitting issues
+
+Before submitting an issue, please note the following:
+
+- macOS is not supported anymore, and as such if it's an
+issue with macOS *please* do not open an issue. Instead, add
+a note to [[Using spmenu on macOS]].
+- If you're using Gentoo or other source based GNU/Linux
+distributions, please check your USE flags for libraries
+spmenu depends on if you're not sure. In rare cases, your
+distribution maintainer may have disabled something.
+- This mainly applies for crashes, but if you're on a non-GNU
+system, or use a different libc, please specify so in your issue.
+- If there is a segmentation fault, please provide the core
+dump or the gdb output if possible.
+
+## See also
+
+- [[Extensive code documentation]]
+  - Page dedicated to the spmenu codebase.
+- [[Contributing to the wiki]]
+  - Page dedicated to contributing to the wiki.

css/index.css

@@ -30,25 +30,27 @@ li {
 h1 {
     font-size: 2em;
     font-weight: bold;
-    margin-bottom: 4px;
-    margin-top: .5em;
+    margin-bottom: 1em;
+    margin-top: 1em;
 }
 
 h2 {
     font-size: 1.2em;
     font-weight: bold;
-    margin-bottom: 4px;
-    margin-top: .5em;
+    margin-bottom: 1em;
+    margin-top: 1em;
 }
 
 h3 {
     font-size: 1.2em;
     font-weight: bold;
+    margin-bottom: 1em;
+    margin-top: 1em;
 }
 
 h3, h4, h5, h6 {
-    margin-top: .4em;
-    margin-bottom: 4px;
+    margin-bottom: 1em;
+    margin-top: 1em;
 }
 
 hr {
@@ -60,8 +62,8 @@ hr {
 }
 
 ul, ol {
-    margin-top: .5em;
-    margin-left: 1em;
+    margin-bottom: 1em;
+    margin-top: 1em;
     padding-left: 1em;
     list-style-position: outside;
 }
@@ -76,15 +78,15 @@ li > ul, li > ol
 }
 
 p {
-    margin-top: 1.5em;
-    margin-bottom: 1.5em;
+    margin-bottom: 1em;
+    margin-top: 1em;
 }
 
 pre {
     font-family: Monospace;
     margin-left: 0;
-    margin-bottom: .5em;
-    margin-top: .5em;
+    margin-bottom: 1em;
+    margin-top: 1em;
 
     /* stroke each browser so that they wrap lines in the pre tag */
     white-space: pre-wrap;       /* css-3 */