*{
    box-sizing: border-box;
}


body{
    background-color: antiquewhite;
}

#padre{

    width: 90%;
    height: 300px;
    margin: 10px auto;
    background-color: blue;
    padding: 16px;
    justify-content: space-around;


}



#hijo{
    width: 100%;
    height: 268px;
    padding: 16px;
    background-color: red;
}


#nieto{
    width: 100%;
    height: 236px;
    background-color: rgb(127, 183, 248);
    padding: 16px;
}


#biznieto{
    width: 100%;
    height: 204px;
    background-color: rgb(144, 10, 206);
}