* {
    margin: 0;
    padding: 0;
}

hr {
    margin: auto;
    width: 80%;
    border: 1.5px solid #000;
}

/* Navigation */

#sidebar {
    position: absolute;
    width: 300px;
    height: 100%;
    background: #000;
    left: -300px;
    transition: .4s;
}

#sidebar.active {
    left: 0;
}

#sidebar ul li {
    list-style: none;
    color: #fff;
    font-size: 20px;
    padding: 20px 24px;
}

#sidebar ul li a {
    text-decoration: none;
    color: #fff;
    font-size: 20px;
}

#sidebar .toggle-btn {
    position: absolute;
    top: 30px;
    left: 330px;
    cursor: pointer;
}

.toggle-btn span {
    width: 45px;
    height: 4px;
    background: #000;
    display: block;
    margin-top: 4px;
}


/* Pages */

.middle {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

#demo {
    font-weight: lighter;
    word-spacing: 20px;
    margin-top: 20px;
}

.middle hr {
    margin-top: 20px;
}

.middle h2 {
    margin-top: 20px;
}

/* Footer */

.disclaimer {
    float: right;
    margin-right: 20px;
    top: 95%;
    position: absolute;
    left: 95%;
    transform: translate(-90%, -90%);
}

.disclaimer a {
    text-decoration: none;
    color: #000;
    font-size: 15px;
}

@media only screen and ( max-width: 479px ) {

    #sidebar {
        width: 200px;
        left: -200px;
    }

    #sidebar .toggle-btn {
        left: 220px;
    }

    .disclaimer {
        text-align: center;
        float: right;
        left: 50%;
        transform: translate(-50%, -90%);
    }
}