.banner_about {
  width: 100%;
  height: 100%;
  overflow: hidden;
  display: flex;
  background-color: #fff;
}

.banner_about > div:nth-of-type(1) {
  flex: 1;
  height: 100%;
  overflow: hidden;
}

.banner_about .img_el {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.banner_about .swiper-container-about {
  width: 100%;
  height: 100%;
}

.banner_about .about_info {
  flex: 1;
  height: 100%;
  flex-shrink: 0;
}

.about_right {
  flex-shrink: 0;
  padding: 0 100px;
  box-sizing: border-box;
}

.about_right .about {
  margin-top: 100px;
  display: flex;
  flex-direction: column;
}
.about_right .about > span:nth-of-type(1) {
  font-size: 25px;
  font-family: serif;
}
.about_right .about > span:nth-of-type(2) {
  color: #888;
  font-size: 14px;
  font-family: monospace;
}

.about_right .intro {
  padding: 100px 0;
  box-sizing: border-box;
  margin-bottom: 30px;
  line-height: 30px;
  color: rgb(127, 127, 127);
  border-bottom: 1px solid #ccc;
  max-height: 500px;
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-width: none;
  font-family: monospace;
}
.about_right .intro::-webkit-scrollbar {
  display: none;
}

.about_right .button {
  width: 200px;
  height: 80px;
  text-align: center;
  line-height: 40px;
  background-color: #383838;
  color: #fff;
  cursor: pointer;
}

.about_right .button {
  width: 200px;
  border-radius: 4px;
  border: none;
  color: #ffffff;
  text-align: center;
  font-size: 28px;
  padding: 20px;
  transition: all 0.5s;
  cursor: pointer;
  margin: 5px;
}

.about_right .button span {
  cursor: pointer;
  display: inline-block;
  position: relative;
  transition: 0.5s;
}

.about_right .button span:after {
  content: "\00bb";
  position: absolute;
  opacity: 0;
  top: 0;
  right: -20px;
  transition: 0.5s;
}

.about_right .button:hover span {
  padding-right: 25px;
}

.about_right .button:hover span:after {
  opacity: 1;
  right: 0;
}