box-shadow不会涵盖所有的手风琴

Question

我有这个div手风琴：

#accordion {
    font-family: Calibri;
    font-size: 12px;
    width: 1200px;
    height: 900px;
  background: #93cede; /* Old browsers */
background: -moz-linear-gradient(top,  #93cede 0%, #75bdd1 41%, #49a5bf 100%); /* FF3.6+ */
background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#93cede), color-stop(41%,#75bdd1), color-stop(100%,#49a5bf)); /* Chrome,Safari4+ */
background: -webkit-linear-gradient(top,  #93cede 0%,#75bdd1 41%,#49a5bf 100%); /* Chrome10+,Safari5.1+ */
background: -o-linear-gradient(top,  #93cede 0%,#75bdd1 41%,#49a5bf 100%); /* Opera 11.10+ */
background: -ms-linear-gradient(top,  #93cede 0%,#75bdd1 41%,#49a5bf 100%); /* IE10+ */
background: linear-gradient(to bottom,  #93cede 0%,#75bdd1 41%,#49a5bf 100%); /* W3C */
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#93cede', endColorstr='#49a5bf',GradientType=0 ); /* IE6-9 */
    -moz-box-shadow: 0 0 5px 5px #888;
-webkit-box-shadow: 0 0 5px 5px#888;
box-shadow: 0 0 5px 5px #888;
  }

但是盒子阴影只占手风琴的一半..