*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body{
    max-width: 700px;
    margin: 0 auto;
}

.btn-dark-mode {
    background-color: #0e1523;
    color: #d1d1d1;
}

/* Modo oscuro */
body.dark-mode {
    background-color: #0e1523;
    color: #b7b7b7;
}

body.dark-mode .btn-dark {
    background-color: #f2f2f2;
    color: #4b4b4b;
}

.agrandar {
    width: 150px;
    height: 150px;
}