Bring up to date with master

src/web/stylesheets/components/_operation.css

@@ -122,7 +122,7 @@ div.toggle-string {
 }
 
 .operation .form-control {
-    padding: 20px 12px 6px 12px;
+    padding: 20px 12px 6px 12px !important;
     border-top-left-radius: 4px;
     border-top-right-radius: 4px;
     background-image: none;

src/web/stylesheets/layout/_controls.css

@@ -21,6 +21,14 @@
     background-color: var(--secondary-background-colour);
 }
 
+#controls-content {
+    position: relative;
+    left: 50%;
+    top: 50%;
+    transform: translate(-50%, -50%);
+    transform-origin: center left;
+}
+
 #auto-bake-label {
     display: inline-block;
     width: 100px;