.error404 {
    background-image: url('../img/fondo-error404.png');
    background-size: cover;
    background-repeat: no-repeat;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.containMessage {
    width: 50%;
    margin: auto;
    text-align: center;
}
.containMessage img{
    width: 100%;
}
.containMessage h3{
    color: #8d2c2d;
    font-size: 30px;
    font-weight: 700;
} 

.containMessage button {
    margin: 20px auto 0;
    display: flex;

}

@media (max-width: 768px) {
    .error404 {
        background-image: url('../img/fondo-error-responsive.png');
        background-size: cover;
        background-repeat: no-repeat;
        height: 100vh;
    } 
}