*{
    box-sizing: border-box;
}
body {
    background-color: rgb(255, 255, 255);
}

#padre{
    width:100%;
    height: 250px;
    display: flex;
    background-color: skyblue;
    padding: 10px;
    flex-wrap: nowrap;
    justify-content: space-around;
    
}
#hijo{
    width: 100%;
    height: 230px;
    background-color:red;
    padding:10px;
}
#nieto{
    width: 100%;
    height: 210px;
    background-color: green;
    padding: 10px;

}
#bisnieto{
    width: 100%;
    height: 190px;
    background-color: peru;
}