header {
    background-color: #181818;
    height: auto;
    text-align:center;
}

header h1 {
    color: white;
    margin: 0;
    font-weight: normal;
    margin-block-end: 1%;
}

header a {
    text-decoration: none;
}

#user {
    font-size: 40px;
    color :white;
    position: absolute;
    left: 20px;
    cursor: pointer;
}

#logout {
    font-size: 40px;
    color: white;
    position: absolute;
    right: 20px;
    cursor: pointer;
}

header hr {
    margin: 0;
}


@media (min-width: 300px) and (max-width: 600px) {

    header h1 {
        color: white;
        margin: 0;
        font-weight: normal;
        margin-block-end: 3%;
        font-size: 20px;
    }

    #user {
        font-size: 26px;
    }

    #logout {
        font-size: 26px;
    }

}