*{padding: 0;
    margin: 0;}
    
    body {background-color: black;
    }

article {background-color: black;
    padding: 20px;
    margin: 20px;
    height: 700px;}
    
    .portada { height: 650px;
        width: 400px;
        position: relative;
        left: 100px;
        border: solid 3px gray;
    }

    .datos 
        {background-color: black;
            color:  crimson ;
            width: 1000px;
            position: relative;
            left: 650px;
            bottom: 600px;
            margin: 10px;
            padding: 10px;
            line-height: 40px;
            font-size:xx-large;
            line-height: 100px;
    }

    h1{ color:  crimson ;
        text-align: center;
    }

    h2{ color:  crimson ;
        text-align: center;
    }


    p{color:    crimson  ;
        font-size: x-large;
    }

    .parte1,.parte2,.parte3
    { padding: 25px;
        margin: 25px;
    }

    iframe {width: 1400px;
        height: 650px;
        margin: 30px;
        padding: 30px;
        position: relative;
        left: 150px;
    }

    
    footer {
        height: 50px;
        color: black;
    }

    @media screen and (max-width: 880px) {
    body {
        overflow-x: hidden;
    }

    .portada {
        width: 90%;
        left: 0;
        margin: 0 auto;
    }

    .datos {
        width: 90%;
        left: 0;
        bottom: 0;
        position: static;
        font-size: large;
        line-height: 1.5;
        margin: 20px auto;
    }

    iframe {
        width: 100%;
        height: auto;
        left: 0;
        margin: 20px 0;
        padding: 0;
    }

    article {
        margin: 10px;
        padding: 10px;
        height: auto;
    }

    .parte1, .parte2, .parte3, .parte4, .parte5,
    .parte6, .parte7, .parte8, .parte9, .parte10,
    .parte11, .parte12, .parte13 {
        padding: 10px;
        margin: 10px;
    }
}


@media screen and (max-width: 480px) {
    body {
        overflow-x: hidden;
    }

    .portada {
        width: 100%;
        height: auto;
        left: 0;
        margin: 0 auto;
        border-width: 2px;
    }

    .datos {
        width: 100%;
        left: 0;
        bottom: 0;
        position: static;
        margin: 10px auto;
        padding: 10px;
        font-size: medium;
        line-height: 1.4;
    }

    iframe {
        width: 100%;
        height: 300px;
        left: 0;
        margin: 10px 0;
        padding: 0;
    }

    article {
        margin: 5px;
        padding: 5px;
        height: auto;
    }

    .parte1, .parte2, .parte3, .parte4, .parte5,
    .parte6, .parte7, .parte8, .parte9, .parte10,
    .parte11, .parte12, .parte13 {
        padding: 5px;
        margin: 5px;
    }

    h1 {
        font-size: 1.5rem;
        text-align: center;
    }

    p {
        font-size: 1rem;
    }
}