Fix margins disposition and size of single and home page

layouts/partials/footer.html

@@ -1,11 +1,11 @@
 
-<nav class="end-nav side-padding card-container card content">
+<nav class="end-nav card-container card content">
       {{ partial "openring-out.html" . }}
 
 </nav>
 
 
-<footer class="content card card-container side-padding" >
+<footer class="content card card-container" >
     <h3>The Octet Press is <a href="{{ .Site.BaseURL }}about-me/">N07070's</a> blog.</h3>
     <small>It's self-hosted, low-tech, without javascript and static, as it should be.</small>
     <br>

layouts/partials/openring-in.html

@@ -1,5 +1,5 @@
 <!-- License-Id: CC0-1.0 -->
-<section class="webring">
+<section class="webring side-padding">
   <h3>Articles from blogs I follow around the net</h3>
   <section class="articles">
     {{range .Articles}}

layouts/partials/openring-out.html

@@ -1,5 +1,5 @@
 
-<section class="webring">
+<section class="webring side-padding">
   <h3>Articles from blogs I follow around the net</h3>
   <section class="articles">