body {
    margin-left: 100px;
    margin-right: 100px;
}

.menu-icon {
    display: block;
    position: fixed;
    top: 10px;
    left: 10px;
    font-size: 24px;
    cursor: pointer;
    z-index: 1001;
}

nav {
    display: none;
    position: fixed;
    top: 60px;
    left: 0;
    width: 100%;
    background-color: #333;
    padding: 10px 0;
    z-index: 1000;
}

nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    text-align: center;
}

nav ul li {
    display: block;
    margin: 10px 0;
}

nav ul li a {
    color: #fff;
    text-decoration: none;
    font-size: 18px;
}

nav ul.show {
    display: block;
}

main {
    padding-top: 60px;
}

.section {
    padding: 100px 0;
    text-align: center;
}

.section h1, .section h2 {
    margin-bottom: 20px;
}

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



@media screen and (max-width: 768px) {
    nav ul {
        display: none;
        position: fixed;
        top: 60px;
        left: 0;
        width: 100%;
        background-color: #333;
        padding: 10px 0;
    }

    nav ul li {
        display: block;
        text-align: center;
        margin: 10px 0;
    }

    nav ul li a {
        color: #fff;
        text-decoration: none;
        font-size: 16px;
    }

    nav ul.show {
        display: block;
    }

    .section {
        padding: 80px 0;
    }
}