* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
}

body {
    background-color: #f4f4f4;
    color: #333;
    line-height: 1.6;
    padding: 20px;
}

header {
    background: #333;
    color: white;
    text-align: center;
    padding: 20px;
}
.side-nav {
    width: 200px;
    margin-right: 20px;
    position: relative;
}

.dropdown-btn {
    background-color: #444;
    color: white;
    padding: 12px;
    width: 100%;
    border: none;
    text-align: left;
    cursor: pointer;
    font-weight: bold;
    transition: background-color 0.3s;
}

.dropdown-btn:hover {
    background-color: #555;
}

.dropdown-content {
    display: none;
    background-color: #f9f9f9;
    width: 100%;
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
    z-index: 1;
    list-style: none;
}

.side-nav:hover .dropdown-content {
    display: block;
}

.dropdown-content li a {
    color: #333;
    padding: 12px 16px;
    text-decoration: none;
    display: block;
    transition: background-color 0.3s;
}

.dropdown-content li a:hover {
    background-color: #ddd;
}

nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    background: #444;
    padding: 10px;
}

nav ul li {
    margin: 0 15px;
}

nav ul li a {
    color: white;
    text-decoration: none;
    font-weight: bold;
}

.container {
    display: flex;
    align-items: flex-start; 
    justify-content: space-between;
    flex-wrap: wrap; 
}

table {
    width: 65%;  
    border-collapse: collapse;
    margin: 20px 0;
    background: white;
}

table, th, td {
    border: 1px solid #ddd;
}

th, td {
    padding: 10px;
    text-align: center;
}

th {
    background: #555;
    color: white;
}

aside {
    width: 30%;
    margin-left: 20px;
}

aside picture img {
    width: 100%;
    display: block;
    border-radius: 8px;
    transition: opacity 0.3s ease-in-out;
}

aside picture img:hover {
    opacity: 0.7;
    transform: scale(1.05);
}

.content {
    width: 100%;
    margin-top: 20px;
}

h1 {
    margin: 20px 0;
    color: #236bb2;
}

h2, h3 {
    margin: 15px 0;
    color: #555;
}

a {
    color: #007bff;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

footer {
    background: #333;
    color: white;
    text-align: center;
    padding: 15px;
    margin-top: 30px;
}

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

    table {
        width: 100%;
    }

    aside {
        width: 100%;
        margin-left: 0;
        margin-top: 20px;
        text-align: center;
    }
    
    nav ul {
        flex-direction: column;
        align-items: center;
    }
    
    nav ul li {
        margin: 5px 0;
    }
}