body {
  font-family: "Kanit", sans-serif;
}
.title-about {
  /* border-bottom: 2px solid #dcdde1; */
  padding: 30px 100px 10px 100px;
  font-size: 1.5em;
}
.title-about h2 {
  margin: 0;
  padding: 10px 0;
  border-bottom: 1px solid;
}
.navs-about {
  /* backdrop-filter: saturate(180%) blur(20px); */
  background: #ffffff;
  text-align: center;
}
.navs-link {
  display: inline-block;
  vertical-align: middle;
  padding: 15px;
  color: #111;
  text-decoration: none;
  cursor: pointer;
}
.active-link {
  color: #ff6f4c;
  font-size: 1.5em;
}

/* menu scoll  */
.scrolls {
  white-space: nowrap;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  -ms-overflow-style: none;
}
.scrolls::-webkit-scrollbar {
  display: none;
}

/* about */
.about-container {
  min-height: 100%;
  /* margin-bottom: -100px; */
}
.about-main {
  overflow: auto;
  padding-bottom: 100px;
}
.mt-history {
  background: #fff;
  text-align: left;
  padding: 0;
}
.mt-history p {
  color: #333;
  text-indent: 50px;
}
.mt-history section {
  column-count: 1;
  column-gap: 2em;
}
/* .img-box {
  widows: 90vw;
  height: 100px;
} */
.img-history {
  max-width: 100%;
  height: auto;
  margin: 2em 0;
}
.mt-history article {
  padding: 2em 100px;
  background: #ffffff;
}
.btn-collaps {
  margin: 20px 18px;
  font-family: "Kanit", sans-serif;
  border: none;
  border-bottom: 1px solid #ffffff;
  cursor: pointer;
  font-size: 1.8em;
  font-weight: bolder;
  background: #fff;
}
.content-hist {
  padding: 0 18px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease-out;
  background-color: #ffffff;
  /* border-bottom: 1px solid #111111; */
}
.mt:hover {
  /* font-size: 2.1em; */
  color: #ff6f4c;
}
.active.mt {
  color: #ff6f4c;
}
.ccc:hover {
  /* font-size: 2.1em; */
  color: #00c6ff;
}
.active.ccc {
  color: #00c6ff;
}
.btn-collaps:focus {
  outline: none;
}
@media (min-width: 900px) {
  .mt-history {
    text-align: left;
    font-size: 18px;
  }
  .mt-history p {
    line-height: 1.6em;
  }
  .mt-history section {
    column-count: 2;
    column-rule-style: solid;
    column-rule-color: #111111;
  }
  .mt-history section > * {
    margin-top: 0;
  }
  /* .mt-history h2 {
    font-size: 3rem;
    padding-bottom: 1em;
    text-align: center;
  } */
  .mt-history article {
    padding: 2em 100px;
    background: #ffffff;
  }
}
@media (max-width: 900px) {
  .about-main {
    padding-bottom: 60px;
  }
  .title-about {
    padding: 70px 25px 10px 25px;
    font-size: 1.2em;
  }
  .mt-history article {
    padding: 2em 25px;
  }
  .btn-collaps {
    font-size: 20px;
  }
}