.contenedor-flex {
    display: flex;
    justify-content: space-between;
}
.seccion-celulares {
    text-align: center;
}
.seccion-celulares img {
    width: 250px;
    height: 250px;
}
body {
    background-color: black;
}
h1 {
    color: white;
}
h2 {
    color: white;
}
body {
    font-family: Arial, Helvetica, sans-serif;
}
.link{
    color: white;
}
.link:hover{
    color: white;
}