#img-container-1 {
    text-align: center;
}

#img-container-1 img {
    border-radius: 5px;
    width: 80%;
    max-width: 1100px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

@media only screen and (max-width: 576px) {
    #img-container-1 img {
        width: 100%;
    }
}