*{
    box-sizing: border-box;
}
#padre{
    width:90%;
    height: 300px;
    background-color: rgb(0, 217, 255);
    padding: 1%;
    display: flex;
    justify-content: flex-end;

}
#hijo1{
    width:20%;
    height: 266px;
    background-color: grey;

    
}
#hijo2{
    width:20%;
    height: 266px;
    background-color: rgb(255, 0, 0);

    margin-left: 10px;
}
#hijo3{
    width:20%;
    height: 266px;
    background-color: rgb(0, 0, 0);

    margin-left: 10px;
}