added flow display controls overlay

src/components/flow/FlowCell/styles.module.scss

@@ -107,3 +107,51 @@
     flex-direction: column-reverse;
   }
 }
+
+.display_modal {
+  @include appear;
+
+  position: absolute;
+  top: 0;
+  left: 0;
+  right: 0;
+  bottom: 0;
+  z-index: 11;
+}
+
+.button {
+  width: 48px;
+  height: 48px;
+  display: flex;
+  align-items: flex-start;
+  justify-content: flex-end;
+  fill: white;
+  padding: 7px;
+  box-sizing: border-box;
+  cursor: pointer;
+}
+
+.dots {
+  @include blur($content_bg, 5px, 0.7);
+
+  padding: 5px 0 0 0;
+  background: $content_bg;
+  border-radius: $radius;
+  width: 18px;
+  height: 30px;
+  position: relative;
+
+  svg {
+    position: absolute;
+    top: 50%;
+    left: 50%;
+    transform: translate(-50%, -50%);
+
+    opacity: 0.5;
+    transition: opacity 0.25s;
+
+    :hover > & {
+      opacity: 1;
+    }
+  }
+}