Docs css update

docs/_static/custom.css

@@ -1,12 +1,5 @@
-.figure img {
-  border-radius: 0.25rem;
-  box-shadow: 0 2px 4px 0 rgb(0 0 0 / 20%);
-}
-
-.figure .caption {
-  color: #6C6C6C;
+.caption-text {
   font-style: italic;
-  margin-top: 0.5rem;
 }
 
 pre .c,
@@ -19,5 +12,5 @@ pre .sd {
 .sponsor {
   font-size: 0.9em;
   line-height: 1.2em;
-  max-width: 275px;
+  text-decoration: none;
 }

docs/_templates/sponsor.html

@@ -1,7 +1,7 @@
-<a class="sponsor card mt-5" href="https://www.coderedcorp.com/">
+<a class="sponsor d-block border rounded p-1 mt-5" href="https://www.coderedcorp.com/">
   <div class="row no-gutters">
     <div class="col-3">
-      <img src="https://docs.coderedcorp.com/logo-square-red-128.png" class="w-100" alt=""/>
+      <img src="https://docs.coderedcorp.com/logo-square-red-128.png" class="w-100 rounded" alt=""/>
     </div>
     <div class="col-9">
       <p class="p-2 m-0">