DD block changer la taille

Bonjour,
J'essaie de faire un slideshow avec ddblock en personnalisant la taille du block (je voudrais qu'il fasse 900px de large pour tester). J'ai repris le modèle upright10p et j'ai changé la taille dans le css. Le block s'affiche bien à la bonne taille mais le fond gris/transparent ne s'affiche plus, et le pager n'est plus en forme. Je ne vois pas bien quoi changer sur le code, je n'y connais rien...
Mon nouveau code ressemble à ça:

div.ddblock-cycle-upright10 div.container{background-color:#fff;width:900px;}
div.ddblock-cycle-upright10 div.container-inner{height:350px;position:relative;}
div.ddblock-cycle-upright10 div.slider{float:left;width:900px;}
div.ddblock-cycle-upright10 div.slider-inner{background:transparent url(../images/transparent_bg.png) repeat scroll 0 0!important;height:100px;overflow:hidden;position:relative;visibility:hidden;}
div.ddblock-cycle-upright10 div.slide{display:none;height:100%;left:0;position:absolute;top:0;}
div.ddblock-cycle-upright10 div.slide-inner img{height:303px;margin:0 !important;padding:0 !important;width:900px;}
div.ddblock-cycle-upright10 div.slide-text{background:transparent url(../images/transparent_bg.png) repeat scroll 0 0!important;position:absolute;}
div.ddblock-cycle-upright10 div.slide-text-horizontal{height:85px;left:0;width:900px;}
div.ddblock-cycle-upright10 div.slide-text-vertical{height:303px;width:140px;}
div.ddblock-cycle-upright10 div.slide-text-top{top:7px;}
div.ddblock-cycle-upright10 div.slide-text-right{bottom:0;right:30px;}
div.ddblock-cycle-upright10 div.slide-text-bottom{bottom:7px;}
div.ddblock-cycle-upright10 div.slide-text-left{bottom:0;left:30px;}
div.ddblock-cycle-upright10 div.slide-text-inner{padding:10px;}
div.ddblock-cycle-upright10 div.slide-title{float:left;}
div.ddblock-cycle-upright10 div.slide-title-vertical{width:130px;}
div.ddblock-cycle-upright10 div.slide-title-horizontal{float:left;width:158px;}
div.ddblock-cycle-upright10 div.slide-title h2{margin:-5px 0 0 0;padding:0;}
div.ddblock-cycle-upright10 div.slide-title-inner{color:white;font-weight:bold;}
div.ddblock-cycle-upright10 div.slide-body-vertical{width:132px;}
div.ddblock-cycle-upright10 div.slide-body-horizontal{float:left;width:290px;}
div.ddblock-cycle-upright10 div.slide-body-inner{color:white;}
div.ddblock-cycle-upright10 div.slide-body-inner p{margin:0 8px 0 0;padding:0;}
div.ddblock-cycle-upright10 div.slide-read-more{width:110px;}
div.ddblock-cycle-upright10 div.slide-read-more p{padding:0;margin:0;}
div.ddblock-cycle-upright10 div.slide-read-more a{background:url(../images/readmore.png) no-repeat;border:none;bottom:5px;color:#fff;font-size:14px;font-family:times New Roman;margin:0;padding:4px 0 4px 19px;position:absolute;text-decoration:none;text-align:left;width:100px;}
div.ddblock-cycle-upright10 div.slide-read-more-horizontal a{right:-17px;}
div.ddblock-cycle-upright10 div.slide-read-more-vertical a{right:5px;}
div.ddblock-cycle-upright10 div.slide-read-more a:hover{background:url(../images/readmore-hover.png) no-repeat;text-decoration:underline;}
div.ddblock-cycle-upright10 div.slide-read-more-horizontal a:hover{right:-17px;}
div.ddblock-cycle-upright10 div.slide-read-more-vertical a:hover{right:5px;}
div.ddblock-cycle-upright10 div.number-pager-pre-top{background:url(images/number_pager_pre30x15_top.png) no-repeat;width:30px;height:15px;margin-right:-2px;float:right;}
div.ddblock-cycle-upright10 div.number-pager-pre-bottom{background:url(images/number_pager_pre30x15_bottom.png) no-repeat;width:30px;height:15px;margin-right:-2px;float:right;}
div.ddblock-cycle-upright10 div.number-pager {background:#000;display:block;float:right;height:15px;left:0;position:relative;width:900px;}
div.ddblock-cycle-upright10 div.number-pager-inner {margin:0;padding:17px;}
div.ddblock-cycle-upright10 div.number-pager ul {list-style-type:none;margin:0!important;padding:0!important;width:900px;}
div.ddblock-cycle-upright10 div.number-pager ul li {background:#000!important;display:inline;list-style-type:none!important;margin:0;padding:0!important;}
div.ddblock-cycle-upright10 div.number-pager ul li a.pager-link{background:#fc0;border:1px solid #ccc;display:block;float:left;font-family:Tahoma,Arial,sans-serif;font-size:.7em;font-weight:bold;height:13px;line-height:13px;margin:0 2px 0 0;text-align:center;text-decoration:none!important;width:13px;}
div.ddblock-cycle-upright10 div.number-pager ul li a.activeSlide{background:#999;color:#fff!important;}
div.ddblock-cycle-upright10 div.number-pager ul li a:focus{outline:none;}
div.ddblock-cycle-upright10 div.number-pager ul li a.pager-link:hover{background:#999;color:#fff!important;}

Si vous voyez où ça bug, j'aimerais bien comprendre la logique pour pouvoir me débrouiller seule après ;-)
Merci beaucoup!