+ shadow style variables

src/style/variables.scss

@@ -25,6 +25,9 @@ $red-color: rgb(246, 27, 20);
 $link-color: $blue-color;
 $inactive-link-color: $light-color;
 
+//SHADOW
+$white-shadow: 0 .1em 0.3em rgba(0, 0, 0, 0.2);
+
 //FONTS
 $title-font: "PT Sans", Arial, sans-serif;
 $text-font: "PT Sans", Arial, sans-serif;