fix showing pdf file bug

src/pages/FilesPage/FileTable.js

           display: "flex",
           marginTop: "39px",
           justifyContent: "space-between",
-          // minHeight: "500px",
         }}
       >
         <div style={{ display: "flex", flexDirection: "column" }}>
               display: "flex",
               width: matches ? "75vw" : "85vw",
               flexDirection: "row",
+              height: "300px",
             }}
           >
             <table