Fix close button color contrast

Author: trymebytes

src/driver.css

@@ -73,7 +73,7 @@
   cursor: pointer;
   font-size: 18px;
   font-weight: 500;
-  color: #d2d2d2;
+  color: #5c5757;
   z-index: 1;
   text-align: center;
   transition: color;