body {
        margin-left: 25%;
        margin-right: 25%;
        padding: 0;
        font-family: Geneva, Arial, sans-serif;
        background: linear-gradient(to bottom, #ffffff, #bdbdbd);
    }

    /* Top banner */
    #top-banner {
        display: flex;
        align-items: center;
        padding: 10px;
        border-bottom: 2px solid #ac3232;
        background: linear-gradient(to right, #ffffff, #ffdede);
    }

    #top-banner img {
        height: 40px;
        margin-right: 15px;
    }

    #top-banner h1 {
        font-size: 32px;
        font-weight: normal;
        margin: 0;
    }

    /* Sidebar */
    #sidebar {
        width: 180px;
        background-color: #ac3232;
        padding: 10px;
        border-right: 2px solid #cccccc;
        height: 100vh;
        box-sizing: border-box;
        float: left;
    }

    #sidebar h3 {
        color: #ffffff;
        font-size: 16px;
        margin-top: 20px;
        margin-bottom: 5px;
        border-bottom: 1px solid #999999;
    }

    #sidebar a {
        display: block;
        text-decoration: none;
        color: #ffffff;
        font-size: 13px;
        margin: 10px 0;
    }

    #content {
        margin-left: 200px;
        padding: 20px;
    }

    #promo-box {
        display: flex;
        align-items: center;
        justify-content: center;
        padding: 15px;
        border: 1px solid #cccccc;
        background: #f5f5f5;
        margin-bottom: 20px;
    }

    #promo-box img {
        height: 50px;
        margin-right: 15px;
    }

    .section-title {
        background-color: #ac3232;
        color: white;
        padding: 5px 8px;
        font-weight: bold;
        margin-bottom: 10px;
        font-size: 20px;
    }

    .columns {
        display: flex;
        gap: 20px;
    }

    .column {
        width: 50%;
        font-size: 14px;
    }

    .column h3 {
        margin-top: 0;
    }

    .column:first-child {
        border-right: 1px solid #cccccc;
        padding-right: 20px;
    }

    .column:last-child {
        padding-left: 20px;
    }