Small css cleaning for preview film

css/preview-film-section.css

@@ -0,0 +1,44 @@
+
+.preview-list {
+  list-style-type: none;
+}
+
+.preview-tile {
+  padding : 10px;
+  overflow: hidden;
+  background-color: gray;
+}
+
+.preview-tile .canvas-container {
+  float: left;
+}
+
+.preview-tile .tile-view {
+  float: left;
+  border: blue 1px solid;
+}
+
+.preview-tile .tile-action {
+  display: none;
+  float: right;
+}
+
+.preview-tile:hover .tile-action {
+  display: block;
+}
+
+.preview-tile:hover {
+  background-color: lightgray;
+}
+
+.preview-tile.selected {
+  background-color: lightyellow;
+}
+
+.preview-tile.droppable-active {
+  background-color: pink;
+}
+
+.preview-tile.droppable-hover-active {
+  background-color: yellow;
+}