.column_single {
  width: 90%;
  margin: 0 auto;
  padding: 32px 0 0;
}

.column_single-box {
  width: 100%;
  margin: 0 0 32px;
}

.column_single-ttl {
  font-size: 28px;
  color: #03827e;
  margin: 0 0 4px;
}

.column_single-info {
  display: flex;
  flex-direction: row;
  margin: 16px 0;
}

.column_single-author {
  display: flex;
  align-items: center;
  color: #333;
  margin: 0 0 16px;
}

.column_single-author>div {
  width: 50px;
  height: 50px;
}

.column_single-author>div>img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
}

.column_single-author-name {
  padding-left: 8px;
  margin: 0;
}

.column_single-info-box {
  display: flex;
  flex-direction: row;
  align-items: flex-start;
  margin: 16px 0 16px auto;
}

.column_single-date {
  border-right: #03827e 1px solid;
  padding: 0 8px 0 0;
  margin: 0 8px 0 0;
  color: #555;
}

.column_single-catgory>a {
  text-decoration: none;
  color: #555;
}

.column_single-main p {
  font-size: 16px;
  line-height: 1.8;
  text-align: justify;
  margin: 0 0 24px;
}

.column_single-main p>strong {
  font-weight: 700;
  background: linear-gradient(transparent 80%,#fff128 0);
}

.column_single-main h2 {
  font-size: 24px;
  border-bottom: #03827e 1px solid;
  line-height: 1.3;
  margin: 32px 0 18px;
}

.column_single-main .lead {
  border: #03827e 1px solid;
  padding: 8px;
  color: #333;
  background-color: hsl(178, 38%, 80%);
}

.column_single-main blockquote {
  padding: 8px;
  margin: 0 0 24px;
  color: #333;
  background-color: #e0ebeb;
}

.column_single-profile {
  border: #d36907 1px solid;
  padding: 8px;
  color: #333;
  background-color: hsl(32, 94%, 80%);
}

.column_single-profile-top {
  font-size: 18px;
  border-bottom: #d36907 1px solid;
  line-height: 1.3;
  margin: 0 0 8px;
}

.column_single-profile-txt {
  font-size: 16px;
  line-height: 1.8;
  text-align: justify;
}

.column_text-footer hr {
  background-color: #333;
  height: 1px;
  margin-bottom: 1.5rem;
}

.column_text-footer p {
  font-size: 16px;
  line-height: 1.8;
  text-align: justify;
}

.column_text-footer a {
  display: block;
  font-size: 16px;
  line-height: 1.8;
  text-align: justify;
  margin: 0 0 24px;
}

.column_single-supplement {
  width: 90%;
  margin: 0 auto 32px;
}

.column_single-supplement-header {
  color: #616161;
  margin: 8px 0;
  font-size: 14px;
}

.column_single-supplement-footer {
  color: #616161;
  margin: 0 0 32px;
  font-size: 16px;
  text-align: right;
}

.column_single_collaborator_items {
  width: 100%;
}

.column_single_other-items {
  width: 100%;
}

.column_single-back {
  text-align: center;
  margin: 0 0 40px;
}

.column_single-back a {
  display: inline-block;
  margin: 0 auto;
  padding: 8px 20px;
  font-size: 16px;
  line-height: 20px;
  text-decoration: none;
  background-color: #000;
  color: #fff;
  border-radius: 18px;
}

.column_single-back a:link, .column_single-back a:visited, .column_single-back a:active {
  color: #fff;
}

/* column_footer */
.column_prev-next-link {
  display: flex;
  height: 48px;
  margin: 32px auto;
  width: 100%;
  justify-content: space-between;
}

.column_prev-next-link a {
  display: inline-block;
  text-decoration: none;
  color: #333;
  width: 20%;
}

.column_prev-next-link div {
  display: block;
  width: 100%;
}

/* column_prev-link */
.column_prev-link {
  height: 16px;
  position: relative;
  margin: 0 auto 0 0;
}

.column_prev-label {
  position: absolute;
  text-align: right;
  font-size: 14px;
}

.column_prev-box {
  position: absolute;
  bottom: -3px;
  width: 100%;
  z-index: -1;
  border-bottom: 10px solid #00827E;
  opacity: 70%;
  border-left: 15px solid transparent;
  height: 0;
}

/* column_next-link */
.column_next-link {
  height: 16px;
  position: relative;
  margin: 0 0 0 auto;
}

.column_next-label {
  position: absolute;
  text-align: left;
  font-size: 14px;
}

.column_next-box {
  position: absolute;
  bottom: -3px;
  width: 100%;
  z-index: -1;
  border-bottom: 10px solid #00827E;
  opacity: 70%;
  border-right: 15px solid transparent;
  height: 0;
}


@media screen and (min-width: 520px) {
  .column_single {
    max-width: 720px;
    margin-bottom: 60px;
  }

  .column_single-ttl {
    font-size: 32px;
    color: #03827e;
    margin: 0 0 16px;
  }

  .column_single-info {
    margin: 16px 0 32px;
  }

  .column_single-author>p {
    padding-left: 16px;
  }

  .column_single-info-box {
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    margin: 16px 0 16px auto;
  }

  .column_single-main>p {
    margin: 0 0 24px;
  }

  .column_single-main>h2 {
    font-size: 24px;
    border-bottom: #03827e 1px solid;
    line-height: 1.3;
    margin: 48px 0 24px;
  }

  .column_single-main>.lead {
    padding: 12px;
  }

  .column_prev-label {
    font-size: 16px;
  }

  .column_prev-box {
    bottom: -8px;
    border-bottom: 15px solid #00827E;
    border-left: 30px solid transparent;
  }

  .column_next-label {
    font-size: 16px;
  }

  .column_next-box {
    bottom: -8px;
    border-bottom: 15px solid #00827E;
    border-right: 30px solid transparent;
  }

  .column_single_txt {
    margin: 0 0 32px;
  }

  .column_single-supplement-header {
    font-size: 18px;
  }

  .column_single-supplement-footer {
    color: #616161;
    margin: 0 0 24px;
    font-size: 16px;
  }
}