body {
    margin: 0;
    padding: 0;
    font-family: Verdana;
    font-size: 0.9rem;
    background-color: #f4f4f4;
}
.container {
    max-width: 1080px;
    margin: 0 auto;
    padding: 20px;
    background-color: #fff;
    box-shadow: 0 15px 10px -15px #111;
}
.logo {
    width: 200px;
    max-width: 100%;
    height: auto;
}
hr {
    border: none;
    border-top: 1px solid #333;
}
.menu {
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #333;
    padding: 10px 0;
    color: #fff;
}
.menu-item {
    margin: 0 12px;
    padding: 8px;
    color: #fff;
    text-decoration: none;
    transition: background-color 0.3s;
}
.menu-item:hover {
    background-color: #555;
}
.section {
    display: none;
    padding: 20px;
    margin-bottom: 150px;
}
.section.active {
    display: block;
}
h2 {
    color: #555;
}
input,
textarea {
    font-size: 1rem;
    padding: 8px;
    border: 2px solid #ccc;
}
textarea {
    width: 100%;
    max-width: 360px;
    height: 180px;
}
table {
    border-collapse: collapse;
    width: 100%;
}
td,
th {
    padding: 12px;
    border: 1px solid #ccc;
    text-align: left;
}
th {
    background-color: #ddd;
}
form input[type="submit"] {
    cursor: pointer;
    background-color: #333;
    color: #fff;
    border: none;
    padding: 10px 20px;
    transition: background-color 0.3s;
}
form input[type="submit"]:hover {
    background-color: #555;
}