Fixed scroll to top button being ontop of filters menu

changelog

···
   - Added close to tray toggle
   - Fixed "Open in folder" not selecting files on linux
   - Remove all sync stuff
-  - Fixed scroll to top button not animating out
+  - Fixed scroll to top button not animating out
+  - Fixed scroll to top button being ontop of filters menu

src/css/filters.css

···
   text-align: center;
   box-shadow: #0005 0 0 10px;
   opacity: 0;
+  z-index: 150;
 }
 
 .filter-container > .filter-title{

src/css/list.css

···
   display: flex;
   justify-content: center;
   align-items: center;
+  z-index: 100;
 }