.bg_img {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100%;
}
.logo_img {
  position: absolute;
  top: 11mm;
  left: 15mm;
  width: 61mm;
  height: 13mm;
}
.school_info {
  position: absolute;
  bottom: 33mm;
  padding-left: 52mm;
  box-sizing: border-box;
}
.school_name {
  font-size: 12mm;
  line-height: 24mm;
}
.report_time {
  font-size: 7mm;
  line-height: 17mm;
}