.contenedor {
    background: lightblue ;
    height: 700px;
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: flex-start;
    align-items: flex-start;
    align-content: center;
}

#elemento1{

}

#elemento2{

}

#elemento3{
    
}

.elemento {
    background: pink;
    width: 120px;
    height: 120px;
    font-size: 4rem;
    text-align: center ;
    border: 2px solid black;
}