#RulePopup {
  position: fixed;
  left: 0;
  top: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6); }
  #RulePopup .content {
    position: absolute;
    width: 1080px;
    left: 50%;
    top: 50%;
    -webkit-transform: translate(-50%, -50%);
            transform: translate(-50%, -50%);
    border-radius: 20px; }
    #RulePopup .content .closebutton {
      position: absolute;
      width: 74px;
      left: 57px;
      top: -37px;
      -webkit-transform: translate(-50%, -50%);
              transform: translate(-50%, -50%);
      border-radius: 20px; }