由于某些原因，它不显示LI的宽度和高度。这里是代码段。这有什么问题？

.navcontainer-top li {
    font-family: "Verdana",sans-serif;
    margin: 0;
    padding: 0;
    font-size: 1em;
    text-align: center;
    display: inline;
    list-style-type: none;<br>
    width: 117px;
    height: 26px;
}


.navcontainer-top li a {
    background: url("../images/nav-button.png") no-repeat;
    color: #FFFFFF;
    text-decoration: none;
    width: 117px;
    height: 26px;
    margin-left: 2px;
    margin-right: 2px;
}
.navcontainer-top li a:hover {
    background: url("../images/nav-button-hover.png") no-repeat;
    color: #dedede;
}