.indent {
  text-indent: -2em;   /* 最初の行だけ左に戻す */
  padding-left: 2em;   /* 全体を右にずらす */
}

.marker1 {
  position: relative;
  display: inline-block;
  z-index: 0;
}

.marker1::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(255, 255, 0, 0.4); /* 蛍光イエロー */
  z-index: -1;
}

.marker2 {
  position: relative;
  display: inline-block;
  z-index: 0;
}

.marker2::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(255, 105, 180, 0.4); /* 蛍光ピンク */
  z-index: -1;
}

.marker3 {
  position: relative;
  display: inline-block;
  z-index: 0;
}

.marker3::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 191, 255, 0.4); /* 蛍光ブルー */
  z-index: -1;
}