added coral red code to css file

lidia_test/html/css/main.css

@@ -76,6 +76,10 @@ img{
 	background-color:rgba(255, 212, 42, 0.5);
 }
 
+.highlight-coralred{
+	background-color:rgba(255,128,128,0.5);
+}
+
 
 #disped{
 	color: #555;