Jak vystylizovat DIV v CSS

  $dotaz = mysql_query("SELECT * FROM filmy WHERE vypis='1' ORDER BY  `filmy`.`id` DESC LIMIT $prvni_cislo, $druhy_cislo ;");
              while($zaznam = MYSQL_Fetch_Array($dotaz)):
                $id_filmu = $zaznam["id"];
                $nazevcj = $zaznam["nazevcj"];
                $rok = $zaznam["rok"];
                $datum = $zaznam["datum"];
                
    echo "<div id='film1'>
            <div class='li'><a href='./databaze.php?film=$id_filmu'>$nazevcj</a> $rok </div>
            <div class='obr'><img src='http://127.0.0.1:8888/vzhled/filmy/$id_filmu.jpg' alt='$nazevcj'></div>
          </div><br>";    
        
    endwhile;