feature(css): added popup css

CHANGELOG.md

-## [1.1.2] - 2021-08-16
+## [1.1.3] - 2021-08-16
 ### Added
 - popup css
 

assets-src/popup/scss/style.scss

@@ -236,7 +236,7 @@ span.wpdesk-activation-reminder {
     margin: 10px auto 0px;
   }
 
-  .get-licence.row button.btn-success {
+  .get-licence.row button.btn-primary {
     padding: 8px 27px;
     border-radius: 5px;
     box-shadow: 0 2px 4px 0 rgb(72 182 72 / 25%);