background-color to match project website

Author: davidcarlisle

_layouts/default.html

@@ -15,7 +15,7 @@
     <header>
       <img alt="logo" src="https://www.latex-project.org/img/latex-project-logo.svg"/>
      </header>
-    <div class="container-lg px-3 my-5 markdown-body" style="background-color:white">
+    <div class="container-lg px-3 my-5 markdown-body" style="background-color:white;margin-top:1em;margin-bottom:1em;">
       {% if site.title and site.title != page.title %}
       <h3><a href="{{ "/" | absolute_url }}">{{ site.title }}</a></h3>
       {% endif %}