ACC SHELL

.u-posAbsolute {
  position: absolute !important;
}

/**
 * Pins to all corners by default. But when a width and/or height are
 * provided, the element will be centered in its nearest relatively-positioned
 * ancestor.
 */

.u-posAbsoluteCenter {
  bottom: 0 !important;
  left: 0 !important;
  margin: auto !important;
  position: absolute !important;
  right: 0 !important;
  top: 0 !important;
}

/**
 * 1. Make sure fixed elements are promoted into a new layer, for performance
 *    reasons.
 */

.u-posFixed {
  position: fixed !important;
  backface-visibility: hidden; /* 1 */
}

.u-posRelative {
  position: relative !important;
}

.u-posStatic {
  position: static !important;
}