h1{
    width: 100%;
    color: white;
    background-color: red;
}

img{
    width: 25%;
    height: 25%;
    margin: 20px;
}


#caja1{
    display: flex;
    flex-wrap: nowrap;
}

#caja2{
    flex-direction: row-reverse;
    display: flex;
    flex-wrap: nowrap;
}

#caja3{
    display: flex;
    flex-wrap: nowrap;
}

#introduccion{
    font-size: x-large;
    color: gray;
}

#nombre{
    font-size: larger;
    color: red;
}

#cuerpo{
    font-size: large;
    color: gray;
}

article{
     border-bottom: 2px solid gray;
}