*{
    box-sizing: border-box;

}

body{
    background-color: aqua;
}
#padre{
    width: 100%;
    height: 250px;
    background-color: blueviolet;
    display: flex;
    flex-wrap: nowrap;
    padding: 10px;

}

#hijo{
    width: 100%;
    height: 230px;
    background-color: lightgoldenrodyellow;
    padding: 10px;

}

#nieto{
    width: 100%;
    height: 210px;
    background-color: pink;
    margin-left: 10px;
    padding: 10px;
}
#bisnieto{
    width: 100%;
    height: 190px;
    background-color: lightblue;
    

}