.contenedor-juego {
    background-image: url(imagenes/fondox-music.jpg);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}





.color {
    transition: 1.5s;
    color: rgb(159, 195, 15);
    background-color: rgba(7, 10, 10, 0.738);
    border: 2px solid rgb(234, 255, 127);
    /* font-size: 1.1em; */
}


.color-incorrecto {
    transition: 1.5s;
    color: rgb(222, 155, 9);
    background-color: rgba(7, 10, 10, 0.738);
    border: 2px solid rgb(240, 97, 9);

}

.btn-juego-pregunta {
    font-size: 1em;
    max-width: 250px;
    width: 100%;
    background-color: rgba(7, 10, 10, 0.504);
    color: khaki;
    border-radius: 10px;
    padding: 1.4em;
    margin: 1.4em;
}

.contenedor-juego-preguntas {
    max-width: 900px;
    width: 100%;
   /*  background-image: url(img/science-music.jpg);
    background-position: center; */
    background-color: rgba(0, 0, 0, 0.705);
    color: khaki;
    text-align: center;
    padding: 1.5em;
    border-radius: 10px;
    margin: 0 auto;
    box-sizing: border-box;   
}


.modo-claro{
    color:gold;
}

.modo-oscuro{
    color:lightcyan;
}



.img-experimento {
    background-image: url(imagenes/science-music.jpg);
    background-size: cover; 
    background-position: center; 
    background-repeat: no-repeat; 
    background-position: center;
    background-attachment: fixed;

}


/* .fondo-opacidad {

    background-color: rgba(0, 0, 0, 0.523);
} */


.fondo-optimizado {
  
  background-image: url('imagenes/science-music.jpg'); 
  background-size: cover; 
  background-position: center; 
  background-repeat: no-repeat; 
  background-attachment: fixed;
  background-color: #f0f0f0; 
  min-height: 100vh; 
  width: 100%;
}




p {
    font-size: 1.1em;
    padding: 1.5em;
}
.img-carrusel {
    max-width: 700px;
    width: 100em;
    margin: 0 auto;
}
.fondo {
    background-color: black;
}