@import url("https://cdn.jsdelivr.net/npm/bootstrap@5.3.8/dist/css/bootstrap.min.css");
*{
    margin: 0;
    padding: 0;
}
body{
    margin: 0;
    background-image: url(../imagenes/nasa.jpg);
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
    background-attachment: fixed;

}
.col{
     display: flex;
    justify-content: center;
    align-items: center;
}
.row{
    margin: 1rem;
}