Vì sao e đã dùng margin:0 auto; ở class #menu-bar mà phần text “NEWS” và div Find local news ko vào giữa như của họ http://www.completewebdevelopercourse.com/content/2-css/bbc.html vậy?

[code]

<title>Technology - BBC News</title>

<style type="text/css">
    #topbar {
        width: 1000px;
        margin: auto;
        height: 40px;
    }

    #logo {
        margin-top: 8px;
        float: left;
        margin-right: 8px;
    }

    body {
        padding: 0;
        margin: 0;
        font-family: Helvetica, Arial, freesans, sans-serif;
    }

    .topbar-section {
        float: left;
        border-left: 1px #CCCCCC solid;
        height: 100%;

    }

    #signin-image {
        width: 21px;
        margin: 10px 15px;
        float: left;
    }

    #signin-text {
        font-weight: bold;
        font-size: 90%;
        position: relative;
        top: 11px;
        padding-right: 50px;
    }

    #wigglyline {
        float: left;
        height: 40px;
    }

    #bell {
        height: 20px;
        margin: 10px;
    }

    #bell-div {
        float: left;
    }

    .topbar-menu {
        font-weight: bold;
        font-size: 90%;
        padding: 11px 15px 0 15px;
        height: 29px;
    }

    #more-arrow {
        width: 16px;
        margin-left: 20px;
    }

    #search-box {
        background-color: #E4E4E4;
        font-weight: bold;
        font-size: 14px;
        padding: 5px;
        border: none;
        margin: 5px 0 5px 5px;
        float: left;
    }

    #magnifying-glass {
        height: 26px;
        margin-top: 5px;

    }

    .clear {
        clear: both;
    }

    #menu-bar-container {
        border-top: 1px solid #CCCCCC;
        background-color: #BB1919;
        width: 100%;
        height: 70px;
    }

    #menu-bar {
        width: 1000px;
        margin:0 auto;
    }

    h1 {
        padding: 10px;
        margin: 0;
        color: white;
        font-size: 40px;
        font-weight: normal;
        float: left;
    }

    #local-news {
        float: right;
        border: 1px #BB4545 solid;
        width: 180px;
        padding: 5px 5px 0 10px;
        margin: 10px 5px 0 0;

    }

    #local-news a {
        color: white;
        text-decoration: none;
        font-size: 20px;
        position: relative;
        bottom: 15px;
    }

    #local-news a:hover {
        text-decoration: underline;
    }

    #local-news img {
        height: 40px;
    }
</style>

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