fix go-top-link footer offset, fix footer margin, fix image description position

src/files/css/main.css

@@ -9668,7 +9668,8 @@ img {
       bottom: 0;
       color: #fff;
       background: rgba(0, 0, 0, 0.4);
-      width: 100%; }
+      width: 100%;
+      padding: 5px; }
   .full-news__gallery-preview {
     width: 140px; }
   .full-news__gallery-prevs-left, .full-news__gallery-prevs-right {