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

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    overflow: hidden;
}

header {
    background-color: #333;
    color: #fff;
    padding: 10px 0;
}

#logo {
    float: left;
    font-size: 1.5em;
}

nav {
    float: right;
}

.nav-links {
    list-style-type: none;
    margin: 0;
    padding: 0;
}

.nav-links li {
    display: inline-block;
    margin-left: 20px;
}

.nav-links li a {
    color: #fff;
    text-decoration: none;
    padding: 10px 15px;
    display: inline-block;
    transition: background-color 0.3s;
}

.nav-links li a:hover {
    background-color: #555;
}

.burger {
    display: none;
    cursor: pointer;
}

.burger div {
    width: 25px;
    height: 3px;
    background-color: #fff;
    margin: 5px;
    transition: transform 0.3s, background-color 0.3s;
}

.content {
    padding: 50px 0;
    text-align: center;
}

@media screen and (max-width: 768px) {
    .nav-links {
        display: none;
        text-align: center;
        width: 100%;
        position: absolute;
        background-color: #333;
        top: 60px;
        left: 0;
        z-index: 1;
    }

    .nav-links.active {
        display: block;
    }

    .nav-links li {
        display: block;
        margin: 10px 0;
    }

    .burger {
        display: block;
        float: right;
        margin-top: 15px;
    }

    .burger.active .line1 {
        transform: rotate(-45deg) translate(-5px, 6px);
    }

    .burger.active .line2 {
        opacity: 0;
    }

    .burger.active .line3 {
        transform: rotate(45deg) translate(-5px, -6px);
    }
}