update style css

wp-content/themes/offshore/style.css

@@ -1866,7 +1866,7 @@ section.home-partners h2.title-2 {
 .partner-images {
     border-radius: 3px;
     border: 1px solid rgba(244, 244, 244, 0.8);
-    background: #ffffff;
+    background: #cececece;
     box-shadow: 1px 1.7px 2px 0px rgba(0, 0, 0, 0.1);
     text-align: center;
     line-height: 100px;