*{
    box-sizing: border-box;
}


body{
    background-color: lightblue;
}

#padre{
    width: 100%;
    height: 250px;
    background-color: blueviolet;
    display: flex;
    padding: 10px;
    flex-wrap: nowrap; 
}
#hijo1{
    width: 20%;
    height: 230px;
    background-color: yellow;
    display: flex;
}

#hijo2{
    width: 100%;
    height: 230px;
    background-color: pink;
    margin-left: 10px;
    padding: 10px;


}

#nieto1{
    width: 100%;
    height: 210px;
    background-color: rgb(54, 115, 199);
}