section.about {
  padding: 50px 0;
  display: -webkit-box;
  display: flex;
  -webkit-box-align: center;
          align-items: center;
  border-bottom: 1px solid #e6ebed;
}

section.about .about-item {
  width: 50%;
}

section.about .about-text .about-title {
  font-size: 3em;
  margin: 20px 0;
  color: #3d4449;
}

section.about .about-text .about-subtitle {
  font-size: 1em;
  margin: 20px 0;
  color: #7f888f;
}

section.about .about-text .about-content {
  font-size: 1em;
  margin-bottom: 50px;
  color: #7f888f;
}

section.about .about-image {
  text-align: center;
}

section.about .about-image img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
}

section.about-feature {
  display: -webkit-box;
  display: flex;
  flex-wrap: wrap;
  -webkit-box-pack: justify;
          justify-content: space-between;
  padding: 50px 0;
  margin: 0 0 50px;
  border-bottom: 1px solid #e6ebed;
}

section.about-feature .feature-item {
  width: 30%;
}

section.about-feature .item-image {
  width: 100%;
  height: 240px;
  text-align: center;
  overflow: hidden;
}

section.about-feature .item-image img {
  max-width: 100%;
  width: auto;
}

section.about-feature .item-title {
  padding: 15px 0;
  font-size: 1em;
  color: #3d4449;
  font-size: 18px;
}

section.about-feature .item-content {
  font-size: 0.8em;
  color: #7f888f;
}

.history-image {
  width: 100%;
  text-align: center;
}

.history-image img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
}

section.teacher .teacher-wrapper {
  display: -webkit-box;
  display: flex;
  flex-wrap: wrap;
  -webkit-box-pack: justify;
          justify-content: space-between;
  padding: 50px 0;
}

section.teacher .teacher-item {
  width: 30%;
  margin-bottom: 30px;
}

section.teacher .teacher-item .teacher-image {
  width: 100%;
  text-align: center;
}

section.teacher .teacher-item .teacher-image img {
  width: 50%;
  height: auto;
}

section.teacher .teacher-item .teacher-name {
  padding: 15px 0;
  font-size: 1em;
  color: #3d4449;
}

section.teacher .teacher-item .teacher-intro {
  text-align: justify;
  text-justify: inter-ideograph;
  font-size: 0.8em;
  color: #7f888f;
}

@media screen and (max-width: 600px) {
  section.about-feature .feature-item {
    width: 100%;
    margin-bottom: 20px;
  }

  section.teacher .teacher-item {
    width: 100%;
  }
}