Fix settings menu displaying errors

style.css

@@ -45,12 +45,15 @@ body {
 }
 
 #menu-content {
-    position: fixed;
+    position: absolute;
     left: 50%;
     top: 50%;
     transform: translate(-50%, -50%);
     font-size: .6em;
-    width: 20%;
+    width: 375px;
+    max-width: 100%;
+    max-height: 90%;
+    overflow: auto;
 }
 
 #menu-content > * {
@@ -58,6 +61,10 @@ body {
     border-bottom: 1px solid #444;
 }
 
+#menu-content > *:last-child {
+    border: none;
+}
+
 #menu-content h3 {
     margin: 0 0 15px;
 }