.BPageBaseContainer {
  position: relative;
}

.BControlBase {
  position: absolute;
}

.BHideForDesign {
  display: none !Important;
}

.BShowForDesign {
  display: block !Important;
  height: 550px !important;
  position: relative;
}

.BGridviewHeaderFixed {
  position: fixed;
}

.BGridviewHeaderAbsolute {
  position: absolute;
  top: 0px;
  left: 0px;
}