.main.error {
    background-image: url('../images/500_emoji.png');
    background-repeat: no-repeat;
    background-position: center;
    background-size: 194px 125px;
    min-height: 600px
}

@media only screen and (-webkit-min-device-pixel-ratio: 1.01), only screen and (min-device-pixel-ratio: 1.01) {
    .main.error {
        background-image: url('../images/500_emoji.png')
    }
}