* {
    margin: 0;
    padding: 0;
}
body {
    /* background: #E9ECF4; */
    color: #000;
    font-family: 'Roboto', sans-serif;
}
.contenedor {
    width: 90%;
    max-width: 1000px;
    margin: 20px auto;
    display: grid;
    grid-gap: 8px;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(4, auto);
}
/* section {
    display: grid;
    grid-column: span 3;
} */
.contenedor > div, 
.contenedor .header,
.contenedor .sidebar,
.contenedor .contenido,
.contenedor .footer {
    /* background: rgba(136, 117, 117, 0.24); */
    padding: 20px;
    border-radius: 8px;
}
.contenedor .header {
    text-align: center;
    font-family: 'Courier New', Courier, monospace;
    color: #000;
    grid-column-start: 1;
    grid-column-end: -1;
}
.contenedor .contenido {
    /* background: rgb(56, 83, 110); */
    color: #000;
    grid-column:span 2;
}
.contenedor .sidebar {
    /* background: #cfcfcf; */
    grid-column: 3 / 4;

    text-align: center;
    min-height: 100px;

    grid-row: span 2;
}
.contenedor .widget-1,
.contenedor .widget-2 {
    /* background: #12283E; */
    color: #000;
    height: 100px;
    text-align: center;
    
    display: flex;
    align-items: center;
    justify-content: center;
}
.contenedor .footer {
    font-family: 'Courier New', Courier, monospace;
    color: #000;
    text-align: center;

    grid-column: span 3;
}

@media screen and (max-width: 420px) {
    .contenedor .contenido {
        grid-column: 1 / -1;
    }
    .contenedor .sidebar {
        grid-column: 1 / -1;
    }
    .contenedor .widget-1 {
        grid-column: span 2;
    }

    iframe {
        align-items: center;
        width: 250px; 
        height: 180px;
    }
}