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

html {
    font-family: arial, sans-serif;
}

img {
    width: 40%;
    height: 40%;
    max-width: 100%;
    height: auto;
    border: 10px solid #007bff; 
    box-sizing: border-box; 
}


.contenedor {
    width: 100%;
    position: relative;
    height: 780px;
    display: flex;
    justify-content: center;
    align-items: center;

}


.boton {
    font-size: 30px;
    width: 70px;
    height: 70px;
    line-height: 70px;
    border-radius: 50%;
    background-color: #e9ecef;
    text-align: center;
    font-weight: bold;
    position: absolute;
    color: #007bff;
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.6);
    -webkit-transition: all 0.3s ease;
    -o-transition: all 0.3s ease;
    transition: all 0.3s ease;
}

.boton:hover {
    cursor: pointer;
    transform: scale(1.2, 1.2);
}

.atras {
    left: 2%;
    top: 50%;
    transform: translateY(-50%);
}

.adelante {
    right: 2%;
    top: calc(50% - 70px);
}

/* Modificaciones para dispositivos móviles */
@media (max-width: 768px) {
    img {
        width: 100%; /* Se adapta al ancho de la pantalla en dispositivos móviles */
        height: auto;
    }
    
    .boton {
        width: 100px;
        height: 100px;
        line-height: 100px;
        font-size: 40px;
    }
    
    .atras {
        left: 5%;
    }
    
    .adelante {
        right: 5%;
    }
}