body {
    margin: 0;
    font-family: Arial, sans-serif;
}

.navbar {
    background-color: #333;
    overflow: hidden;
    padding: 15px;
}

.navbar-toggle {
    cursor: pointer;
}

.navbar-toggle span {
    background-color: #fff;
    display: block;
    height: 3px;
    margin: 6px 0;
    transition: 0.4s;
}

.navbar-links {
    list-style-type: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
}

.navbar-links li {
    float: left;
    margin-right: 20px;
}

.navbar-links a {
    display: block;
    color: white;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
}

.content {
    padding: 20px;
}

@media screen and (max-width: 768px) {
    .navbar-links {
        display: none;
        width: 100%;
        text-align: center;
        position: absolute;
        top: 60px;
        left: 0;
        background-color: #333;
    }

    .navbar-links li {
        float: none;
        display: block;
    }

    .navbar-toggle {
        display: block;
    }
}