body {
    background: #f4f6f9;
    font-family: Arial;
}

/* Sidebar */
.sidebar {
    width: 220px;
    height: 100vh;
    background: #2c3e50;
    position: fixed;
}

.sidebar a {
    display: block;
    padding: 12px;
    color: #fff;
    text-decoration: none;
}

.sidebar a:hover {
    background: #1abc9c;
}

/* Content */
.content {
    margin-left: 220px;
    padding: 20px;
}

/* Cards */
.card-box {
    background: #fff;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
}

/* Table */
table {
    background: #fff;
}