#container {
    display: grid;
    grid-template-areas: 
        "header header header"
        "a1 a1 a2"
        "a3 a3 a4"
        "a3 a3 a7"
        "a5 a6 a7";
    grid-auto-rows: 120px;
    gap: 8px;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 10px;
}

.header {
    grid-area: header;
    background-color: red;
    display: flex;
    flex-direction: row;
    flex-flow: reverse;
    align-items: center;
}

.ab1 {
    grid-area: a1;
    background-color: orange;
}

.ab2 {
    grid-area: a2;
    background-color: yellow;
}

.ab3 {
    grid-area: a3;
    background-color: green;
    padding: 10px;
    overflow: auto;
    word-wrap: break-word;
    font-size: 0.9rem;
}

.ab4 {
    grid-area: a4;
    background-color: blue;
}

.ab5 {
    grid-area: a5;
    background-color: indigo;
}

.ab6 {
    grid-area: a6;
    background-color: violet;
}

.ab7 {
    grid-area: a7;
    background-color: pink;
}



.nav {
    margin-left: 60%;
    width: 40%;
    display: flex;
    justify-content: space-between;
    background-color: rgb(199, 217, 171);
    padding: 10px;
    margin-top: 5px;
}

/* Responsive styles */
@media (max-width: 900px) {
    #container {
        padding: 8px;
        gap: 6px;
    }

    .header {
        flex-direction: column;
        align-items: flex-start;
    }

    .nav {
        justify-content: center;
    }
}

@media (max-width: 600px) {
    #container {
        padding: 6px;
        gap: 4px;
    }

    .header {
        align-items: center;
    }

    .nav {
        flex-wrap: wrap;
    }
}