Step 13.21: Create show pictuer component styles

Author: dotansimha

src/pages/messages/show-picture.scss

@@ -0,0 +1,10 @@
+.show-picture {
+  background-color: black;
+
+  .picture {
+    position: absolute;
+    top: 50%;
+    left: 50%;
+    transform: translate(-50%, -50%);
+  }
+}