#container{
    display: grid;
    grid-template-areas: 
    "header header header"
    "content1 content1 content2"
    "content3 content3 content4"
    "content3 content3 content5"
    "content6 content7 content5";
    grid-auto-rows: 161px;
    gap: 1px;
    margin-left: 22.5%;
    margin-right: 22.5%;
    border: 15px solid aliceblue; 
    border-style: double;
}
.header{
    display: flex;
    flex-direction: row;
    flex-flow: reverse;
    align-items: center;
    justify-content: center;
    grid-area: header;
    background-color: cornflowerblue;
}
.content1{
    display: flex;
    justify-content: center;
    align-items: center;
    grid-area: content1;
    background-color: cornflowerblue;
}
.content2{
    display: flex;
    justify-content: center;
    align-items: center;
    grid-area: content2;
    background-color: cornflowerblue;
}
.content3{
    display: flex;
    justify-content: center;
    align-items: center;
    grid-area: content3;
    background-color: cornflowerblue;
    font-size: x-large;
}
.content4{
    display: flex;
    justify-content: center;
    align-items: center;
    grid-area: content4;
    background-color: cornflowerblue;
}
.content5{
    display: flex;
    justify-content: center;
    align-items: center;
    grid-area: content5;
    background-color: cornflowerblue;
}
.content6{
    display: flex;
    justify-content: center;
    align-items: center;
    grid-area: content6;
    background-color: cornflowerblue;
}
.content7{
    display: flex;
    justify-content: center;
    align-items: center;
    grid-area: content7;
    background-color: cornflowerblue;
}
body{
    background-color: black;
    color: aliceblue;
}
img#br{
    height: 161px;
}
caption{
    caption-side: bottom;
}
img#rs{
    height: 161px;
}
img#nz{
    height: 100px;
}



@media screen and (max-width:600px){
    #container{
        grid-template-areas: 
        "header"
        "content1"
        "content2"
        "content3"
        "content4"
        "content5"
        "content6"
        "content7"
    }
}