html - How can I centre multiple images that are floated across more than one line? -

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i using bootstrap , have div "col-md-8 col-md-offset-2" in centre of page. using php loading images (film posters) database in while loop until images loaded. have floated them , given them margins space them out little, , load on multiple lines. above them centred h2 (the genre). how horizontally centre images each line? @ moment align left of div. have tried combination of things centre them none have affect.

here code.

<div class="col-xs-8 col-xs-offset-2" id="genrecontent">     <?php         //get genre name         $genres = $db->query('select name genre id = '.($_get['id']));         $genre = $genres->fetch_object('genre');     ?>     <h2><?=$genre->name?></h2>     <br/>     <?php         // films genre dealing         // ensuring escape string         $films = $db->query('select * film genre_id = '.$db->real_escape_string($_get['id']));         while($film = $films->fetch_object('film')):     ?>     <a href="films.php?id=<?=$film->id?>">         <img src="http://comp2203.ecs.soton.ac.uk/coursework/1415/assets/posters/<?=$film->id?>_medium.jpg" alt="film poster"/>     </a>     <?php         endwhile;     ?> </div>

and here css

#genrecontent h2{     text-align: center; }  #genrecontent a{     float: left; }  #genrecontent img{     width: 200px;     height: 300px;     margin: 15px; }

i realise set width of div , widths of images , margins make perfect spacing out div changes size responsively corresponding browser size , need work out way float , centre them.

i misunderstood question first time around. align multiple images on line want set display of images inline-block , set parent text-align: center.

i made fiddle should css this:

img {     width: 100px; } li {     display: inline-block; } ul {     list-style: none;     text-align: center; }

https://jsfiddle.net/bxurz66w/


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