.titulo {
    margin-top: 20px;
    font-size: 36px;
}

.subtitulo {
    max-width: 900px;
    margin: 0 auto;
    margin-top: 30px;
    font-size: 16px;
    line-height: 25px;
    text-align: justify;
}

.cabecera {
    height: 100%;
}

.contenedor-cartas {
    width: 100%;
    text-align: center;
    background-color: #000000;
    display: block;
}

.carta {
    max-width: 900px;
    height: fit-content;
    margin: 0 auto;
    border-bottom: 1px solid #ffffff24;
    padding-bottom: 30px;
    margin-top: 30px;
}

.titulo-carta {
    margin-top: 30px;
}

.descripcion-carta {
    text-align: justify;
    font-weight: 200;
    padding: 10px;
    justify-content: center;
}

/*Small devices (landscape phones, 576px and up)*/
@media (min-width: 576px) {

}

/*Medium devices (tablets, 768px and up)*/
@media (min-width: 768px) {
    .titulo-carta {
        text-align: left;
    }

}

/*Large devices (desktops, 992px and up)*/
@media (min-width: 992px) {

}

/*Extra large devices (large desktops, 1200px and up)*/
@media (min-width: 1200px) {
    .cabecera {
        height: 900px;
        padding-top: 50px;
    }

    .titulo {
        width: 900px;
        margin: 0 auto;
        margin-top: 40px !important;
        font-size: 48px;
    }
}