fix button hitboxes

static/index.css

@@ -57,6 +57,15 @@ button, button a {
     text-decoration: none;
 }
 
+button a {
+    width: 100%;
+    height: 2rem;
+    text-align: center;
+    line-height:2rem;
+    vertical-align: middle;
+    display: inline-block;
+}
+
 #messages {
     list-style-type: none;
     margin: 0;