Open the CSS file, add the following code, and then save your changes:
.siebui-list-recyclebin {
 margin : 0px;
}
.siebui-jcarousel-wrapper {
 position: relative;
 height: 450px;
}
.siebui-jcarousel {
 position: relative;
 overflow: hidden;
 height: 100% !important;
 margin: 5px;
 width : 80%;
 border: 10px solid #fff;
 -webkit-border-radius: 5px;
 -moz-border-radius: 5px;
 border-radius: 5px;
 -webkit-box-shadow: 0 0 2px #999;
 -moz-box-shadow: 0 0 2px #999;
 box-shadow: 0 0 2px #999;
}
.siebui-jcarousel ul {
 width: 98%;
 position: relative;
 list-style: none;
 margin: 0;
 padding: 0;
}
.siebui-jcarousel ul li {
 margin-bottom : 5px;
}
.siebui-jcarousel-prev,
.siebui-jcarousel-next {
 transform: rotate(90deg);
  transform-origin: left top 0;
 float : left;
 position: absolute;
 width: 30px;
 height: 30px;
 text-align: center;
 background: #4E443C;
 color: #fff;
 text-decoration: none;
 text-shadow: 0 0 1px #000;
 font: 24px/27px Arial, sans-serif;
 -webkit-border-radius: 30px;
 -moz-border-radius: 30px;
 border-radius: 30px;
 -webkit-box-shadow: 0 0 2px #999;
 -moz-box-shadow: 0 0 2px #999;
 box-shadow: 0 0 2px #999;
}
 .siebui-jcarousel-prev {
 top : 0px;
 left : 45%;
}
 .siebui-jcarousel-next {
 top : 450px;
 left: 45%;
}
 .siebui-jcarousel-prev:hover span,
.siebui-jcarousel-next:hover span {
 display: block;
}
 .siebui-jcarousel-prev.inactive,
.siebui-jcarousel-next.inactive {
 opacity: .5;
 cursor: default;
}
div.siebui-carousel-col{
 display : block;
}
div.siebui-carousel-item{
 height : 75px;
 padding : 5px;
 border : 1px solid #acacac;
 text-align : center;
 padding-top: 20px;
 word-wrap : break-word;
 -webkit-border-radius: 5px;
 -moz-border-radius: 5px;
 border-radius: 5px;
}
a.siebui-citem-add{
 display : block;
 top : 2px;
 right : 2px;
 float : right;
 width : 16px;
 height : 16px;
 background: url(../images/plus.png) no-repeat center center;
}