rountangles have now a transparent background

src/frontend/rountangleEditor/RountangleEditor.css

@@ -2,17 +2,19 @@
     background: lightgrey;
     height: 500px;
     position: relative;
+    font-family: sans-serif;
 }
 .re-rountangle {
     position: absolute;
-    background: white;
-    border: 1px solid black;
+    border: 3px solid black;
     border-radius: 5px;
     display: flex;
     flex-direction: column;
     justify-content: center;
     text-align: center;
     overflow: hidden;
+    filter: drop-shadow(.1rem .1rem .1em deeppink);
+    font-weight: bold;
 }
 .re-rountangle:hover {
     cursor: grab;