.backgroud-yellow {
  position: relative;
  background-color: #fffeee;
  border-top: 0.2em solid #ee1c25;
  border-radius: 0.2em 0.2em 0 0;
  border-left: 0.05em solid #000;
  border-right: 0.05em solid #000;
  padding: 1em 0;
}
.backgroud-yellow::after {
  content: "";
  position: absolute;
  left: -5%;
  width: 110%;
  height: 1em;
  background: linear-gradient(0deg, #fff, transparent);
}

.title-1,
.title-2 {
  display: block;
}
.title-1 {
  font-size: 0.8em;
}
.title-2 {
  font-size: 1.5em;
  color: #ee1c25;
  margin-bottom: 0.5em;
  border-bottom: 0.03em solid #000;
  width: 98%;
  margin: 0 auto;
}
.tab-area {
  display: flex;
  justify-content: space-evenly;
  padding-top: 0.5em;
  flex-wrap: wrap;
}
.tab-area > span {
  background-color: #ee1c25;
  color: #fff;
  line-height: 1.2;
  padding: 0 0.1em;
}
.read.playing .title-2 {
  color: #ff4b00;
  /*再生時に文字の一部が取り残される事象の対処*/
  text-shadow: 0 0 1em rgba(0, 0, 0, 0);
}
.block-icon {
  position: absolute;
  display: block;
  width: 1em;
  height: 1em;
  border: 0.04em solid #000;
  transform: rotate(45deg);
  border-radius: 0.3em;
  left: 0.5em;
  top: 0.5em;
}
.block-icon::after {
  content: "";
  position: absolute;
  display: block;
  width: 0.7em;
  height: 0.7em;
  border: 0.04em solid #000;
  border-radius: 0.2em;
  left: 0.4em;
  top: -0.5em;
}

.block-icon::before {
  content: "";
  position: absolute;
  display: block;
  width: 0.3em;
  height: 0.3em;
  border: 0.04em solid #000;
  border-radius: 0.1em;
  left: 1.15em;
  top: 0.35em;
}