/* Общие стили */
body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f9f9f9;
    color: #333;
    line-height: 1.6;
}

header {
    background-color: #005f73;
    color: white;
    text-align: center;
    padding: 1rem 0;
}

header h1 {
    margin: 0;
    font-size: 2.5rem;
}

header p {
    font-size: 1rem;
}

nav ul {
    background: #0a9396;
    display: flex;
    justify-content: center;
    list-style: none;
    margin: 0;
    padding: 0;
}

nav ul li {
    margin: 0 1rem;
}

nav ul li a {
    color: white;
    text-decoration: none;
    font-size: 1.2rem;
}

nav ul li a:hover {
    text-decoration: underline;
}

main {
    padding: 2rem;
    display: flex;
    justify-content: space-between;
}

section {
    flex: 3;
}

aside {
    flex: 1;
    background: #e0fbfc;
    padding: 1rem;
    margin-left: 1rem;
}

footer {
    background: #005f73;
    color: white;
    text-align: center;
    padding: 1rem 0;
    margin-top: 1rem;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 1rem 0;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
}

table th, table td {
    border: 1px solid #ddd;
    padding: 0.5rem;
    text-align: left;
}

table th {
    background: #0a9396;
    color: white;
}

@media (max-width: 768px) {
    nav ul {
        flex-direction: column;
    }

    main {
        flex-direction: column;
    }

    aside {
        margin-left: 0;
        margin-top: 1rem;
    }
}