.fill-relative {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
}

.full-size {
    width: 100%;
    height: 100%;
}

.full-width {
    width: 100%;
}

.full-height {
    height: 100%;
}
.half-width {
    width: 50%;
}