.layout-mock *:not(.ui-splitbar) {
    background: #eee no-repeat center;
}

.layout-mock .center-back {
    background-image: url("http://placehold.it/400x300/eee/666&text=CENTER");
}

.layout-mock .north-back {
    background-image: url("http://placehold.it/400x300/eee/666&text=NORTH");
}

.layout-mock .south-back {
    background-image: url("http://placehold.it/400x300/eee/666&text=SOUTH");
}

.layout-mock .east-back {
    background-image: url("http://placehold.it/400x300/eee/666&text=EAST");
}

.layout-mock .west-back {
    background-image: url("http://placehold.it/400x300/eee/666&text=WEST");
}

.gradeGridErrorMsg {
    margin: 6px 0 0 10px;
    font-weight: lighter;
    color: red;
}