.yodogawa .go_form {
  margin-top: 4rem;
}
.about_post .go_form {
  margin-top: 3rem;
}

.mitazo_twitter {
  width: 386px;
  max-width: 100%;
  padding: 24px;
  margin: 2rem auto 0 auto;
  border: 1px solid var(--twitter-color);
}
.mitazo_twitter figure .hb-twitter {
  font-size: 46px;
  color: white;
  display: block;
}

.mitazo_twitter figure {
  background-color: var(--twitter-color);
  border-radius: 10px;
  height: 58px;
  width: 58px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.mitazo_twitter .content * {
  color: var(--twitter-color)
}
.mitazo_twitter .content a {
  font-size: 24px;
  border-bottom: 1px solid var(--twitter-color)
}

.about_post, .about_mistake, .mitazo {
  font-feature-settings: "palt" 1;
  letter-spacing: .1em;
  text-align: justify;
}
.about_post {
  background-color: var(--body-red-color);
  border-radius: 10px;
  color: white;
  display: flex;
  flex-direction: column;
  align-items: center;
  font-weight: bold;
  line-height: 2;
  padding: 4rem;
  margin-top: 6rem;
}
.about_post .title {
  color: white;
  margin-bottom: 1rem;
}
.about_post img {
  display: block;
}

.about_mistake {
  font-size: 14px;
  background-color: var(--base-color);
  border-radius: 10px;
  color: white;
  display: flex;
  flex-direction: column;
  align-items: center;
  font-weight: bold;
  line-height: 2;
  padding: 4rem;
  margin-top: 4rem;
}
.about_mistake img {
  display: block;
}
.about_mistake a, .about_mistake a:hover {
  color: white;
  border-bottom: 1px solid white;
}
.about_mistake .button {
  background-color: rgb(156, 156, 156);
  border-color: rgb(156, 156, 156);
  font-size: 22px;
  display: inline-block;
  margin-top: 2rem;
}
.about_mistake .todays_correction {
  margin-top: 4rem;
  padding: 2rem;
  background-color: white;
  width: 100%;
  color: var(--base-color);
}
.about_mistake .todays_correction .title {
  font-size: 20px;
}
.about_mistake .todays_correction pre {
  white-space: pre-line;
  background-color: white;
  color: var(--base-color);
  padding: 0;
}

.update {
  padding: 0;
  margin: 5rem 0 ;
}
.update h2 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 2%;
  align-items: center;
}
.update h2::before, .update h2::after {
  content: '';
  width: 100%;
  height: 1px;
  background-color: var(--base-color);
}
.update .date-list {
  padding: 2rem 0;
  border-bottom: 1px solid var(--base-color);
}
.update .date-list ul {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(8, 1fr);
}
.update nav ul {
  width: 315px;
  margin: 2.5em auto 0 auto;
  display: flex;
  justify-content: space-between;
}
.update nav ul li {
  width: 75px;
}

.mitazo {
  background-color: white;
  padding: 70px 0 32px 0;
  line-height: 2;
}
.mitazo .title::before {
  content: '';
  background-image: url(../images/title_left.png);
  width: 152px;
  height: 131px;
  background-size: contain;
  display: block;
  position: absolute;
  left: 30px;
  top: -30px;
}
.mitazo .title {
  position: relative;
  padding-left: 160px;
  line-height: 1.5;
}
.mitazo .introduction {
  padding-left: 160px;
}
.mitazo .subject {
  background-color: var(--base-color);
  text-align: center;
  color: white;
  font-size: 30px;
  padding: 14px 18px;
  margin: 2.5em 0 1.5em 0;
  font-weight: bold;
}
.mitazo .mail, .mitazo .hobonichi {
  margin: 2em auto 0 auto;
  max-width: 500px;
  position: relative;
  padding-top: .15em;
  padding-left: 70px;
  background-repeat: no-repeat;
  color: var(--base-color);
  min-height: 50px;
}
.mitazo .mail {
  background-image: url(../images/mail.png);
  background-size: 50px;
  background-position: 2px 0;
}
.mitazo .hobonichi {
  background-image: url(../images/reply.png);
  background-size: 63px 52px;
  background-position: 0 3px;
  color: var(--reply-color)
}
.mitazo hr {
  width: 90%;
  margin: 3em auto;
  background-color: var(--base-color);
  height: 1px;
}
.mitazo .samidare img {
  display: block;
  margin: 0 auto;
}
.mitazo .dobon {
  background-image: url(../images/dobon.gif);
  background-repeat: no-repeat;
  background-size: 50px 50px;
  background-position: 0 0;
  color: var(--body-red-color);
  margin: 3em auto;
  font-weight: bold;
  min-height: 50px;
  padding-top: .5rem;
  padding-left: 70px;
}
.mitazo .closing {
  margin: 3rem 0;
  padding-left: 160px;
}
.updated_at {
  padding-bottom: 0;
}

@media (max-width: 768px) {
  .mitazo {
    padding-bottom: 14px;
  }
  .mitazo .samidare {
    padding: 0 14px;
  }
}
@media (max-width: 640px) {
  .yodogawa .go_form, .about_post .go_form, .about_mistake, .about_mistake .todays_correction {
    margin-top: 2rem;
  }
  .about_post, .about_mistake {
    padding: max(30px, 8%) 8%;
  }
  .mitazo {
    font-size: 14px;
  }
  .mitazo .subject {
    font-size: 24px;
  }
  .mitazo_twitter {
    padding: 18px;
  }
  .mitazo_twitter .content a {
    font-size: 18px;
  }
  .update {
    margin: 2rem 0 1.5rem 0;
  }
  .update h2 {
    grid-template-columns: .5fr 1fr .5fr;
  }
  .update .date-list {
    padding: 1rem 0;
  }
  .update .date-list ul {
    grid-template-columns: repeat(5, 1fr);
    gap: .75rem;
  }
  .mitazo {
    padding: 20px 0 14px 0;
  }
  .mitazo .introduction {
    margin: 0 auto;
    padding-left: 0;
  }
  .mitazo .title, .mitazo .introduction, .mitazo .mail, .mitazo .hobonichi, .mitazo .closing {
    width: 86%;
  }
  .mitazo .dobon {
    padding-top: 60px;
    padding-left: 0px;
  }
  .mitazo .mail {
    background-position: 0 0;
    padding: 60px 0 0 0;
  }
  .mitazo .hobonichi {
    background-position: -3px 0;
    padding: 60px 0 0 0;
  }
  .mitazo .title::before {
    left: 50%;
    transform: translateX(-50%);
    top: -48px;
  }
  .mitazo .title {
    margin: 2rem auto;
    padding-left: 0px;
    padding-top: 84px;
  }
  .mitazo .closing {
    padding-left: 0px;
    margin: 3rem auto;
  }
  .about_post {
    margin-top: 3rem;
  }
}