Move Graph-specific html from GraphsPage to Graph.svelte

ts/graphs/Graph.svelte

@@ -42,6 +42,9 @@
                  * marked the ticks as odd */
                 display: none;
             }
+
+        &:focus {
+            outline: 0;
         }
     }
 
@@ -57,7 +60,7 @@
     }
 </style>
 
-<div class="graph">
+<div class="graph" tabindex="-1">
     <h1>{title}</h1>
 
     {#if subtitle}

ts/graphs/GraphsPage.svelte

@@ -60,9 +60,6 @@
         }
     }
 
-    .no-focus-outline:focus {
-        outline: 0;
-    }
 </style>
 
 <div class="base">
@@ -77,7 +74,6 @@
     {/if}
 
     {#if sourceData}
-        <div tabindex="-1" class="no-focus-outline">
         {#each graphs as graph}
             <svelte:component
                 this={graph}
@@ -88,6 +84,5 @@
                 {nightMode}
                 on:search={browserSearch} />
         {/each}
-        </div>
     {/if}
 </div>