.common-width {
    width: 90%;
    margin-left: 5%;
}

.exhibition {
    width: 50px;
    height: 50px;
}

.exhibition-lock {
    height: 50px;
}

.director {
    width: 50px;
    height: 65px;
}

.director-lock {
    height: 65px;
}