fix files table CSS specificity issue causing multiselect bar overlap, fix #2075

apps/files/css/files.css

@@ -73,7 +73,7 @@ table th#headerSize, table td.filesize { min-width:3em; padding:0 1em; text-alig
 table th#headerDate, table td.date { min-width:11em; padding:0 .1em 0 1em; text-align:left; }
 
 /* Multiselect bar */
-table.multiselect { top:63px; }
+#filestable.multiselect { top:63px; }
 table.multiselect thead { position:fixed; top:82px; z-index:1; -moz-box-sizing: border-box; box-sizing: border-box; left: 0; padding-left: 64px; width:100%; }
 table.multiselect thead th { background:rgba(230,230,230,.8); color:#000; font-weight:bold; border-bottom:0; }
 table.multiselect #headerName { width: 100%; }