add css for modal-box

templates/default/assets/less/thelia/global.less

@@ -101,3 +101,22 @@ ul {
         }
     }
 }
+
+
+.modal-dialog{
+  td{vertical-align: middle}
+
+  .close{
+    margin: 10px;
+    position: relative; z-index: 10;
+  }
+
+  .btn{
+    margin-left: 10px;
+  }
+}
+@media screen and (min-width: 768px){
+  .modal-dialog{
+    width: 800px;
+  }
+}