.rotate-45 {
    transform: rotate(45deg); /* Equal to rotateZ(45deg) */
}
.rotate-90 {
    transform: rotate(90deg); /* Equal to rotateZ(90deg) */
}
.rotate-180 {
    transform: rotate(180deg); /* Equal to rotateZ(180deg) */
}
.rotate-270 {
    transform: rotate(270deg); /* Equal to rotateZ(270deg) */
}