.image-in-center {
    display: block;
    margin-left: auto;
    margin-right: auto;
    width: 50%;
}

.image-in-left {
    display: block;
    margin-left: 0;
    margin-right: auto;
    width: 50%;
}

.image-in-right {
    display: block;
    margin-left: auto;
    margin-right: 0;
    width: 50%;
}