Use Tolino-compatible three-column overview layout

static/styles.css

@@ -73,20 +73,24 @@ h2 {
 
 .book-list {
   list-style: none;
-  margin: 0;
+  margin: 0 -0.25rem;
   padding: 0;
-  display: grid;
-  grid-template-columns: repeat(3, minmax(0, 1fr));
-  gap: 0.75rem;
 }
 
 .book-item {
-  border: 1px solid #000;
+  display: inline-block;
-  padding: 0.5rem;
+  width: 33.3333%;
+  vertical-align: top;
+  box-sizing: border-box;
+  padding: 0.25rem;
+  margin: 0;
+  border: none;
 }
 
 .book-card {
   display: block;
+  border: 1px solid #000;
+  padding: 0.5rem;
   color: inherit;
   text-decoration: none;
 }