body {
    
    background-image: url(tlo_day.png);
    background-repeat: no-repeat;
    background-size: cover;
    margin: 2%;
    text-align: center;
    font-family: 'Sawarabi Mincho', sans-serif;
    color: black;
    font-size: 1.1em;
}
.one {
    margin: 3%;
}
.jumbotron {
    width: 50%;
    margin: auto;
    color: black;
}
.linia {
    color: black;
    background-color: black;

}

@media only screen and (max-width: 1000px) {
    .jumbotron {
        width: 100%;
        margin: auto;
        color: black;
    }
    body {
        font-size: 2em;
    }
}