diff --git a/media/src/css/subtitle-editor/subtitle-editor-dev.css b/media/src/css/subtitle-editor/subtitle-editor-dev.css
diff --git a/media/src/css/subtitle-editor/subtitle-editor.scss b/media/src/css/subtitle-editor/subtitle-editor.scss
@@ -641,6 +641,10 @@ section.main {
            &:before {
                @include shadow;
            }
+            video {
+                height: 321px;
+                width: 100%;
+            }
        }
    }
 }