* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.center {
    margin:20px;
}

.container {
    display: flex;
    height: 100vh;
}

.sidebar {
    width: 250px;
    background-color: #2c3e50;
    color: white;
    padding: 20px;
}

.sidebar h2 {
    text-align: center;
    margin-bottom: 20px;
}

.sidebar ul {
    list-style-type: none;
}

.sidebar ul li {
    margin: 15px 0;
}

.sidebar ul li a {
    color: white;
    text-decoration: none;
    font-size: 18px;
}

.sidebar ul li a:hover {
    text-decoration: underline;
    background-color:#68aaed;
}

.main-content {
    flex-grow: 1;
    padding: 20px;
    background-color: #ecf0f1;
}

.main-content h1 {
    color: #2c3e50;
    margin-bottom: 20px;
}

.main-content p {
    font-size: 16px;
    line-height: 1.6;
}

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

    .sidebar {
        width: 100%;
        padding: 10px;
    }

    .main-content {
        padding: 10px;
    }
}