.content_us {
  margin-top: 24px;
  width: 100%;
  overflow: hidden;
}
.content_us div {
  height: 320px;
  width: 50%;
  max-width: 640px;
  float: left;
  background-color: #F4FAFF;
}
.content_us > div:nth-child(1) {
  padding: 36px;
}
.content_us > div:nth-child(1) span {
  display: block;
  text-align: left;
  font-size: 18px;
  font-weight: 400;
  color: #001B50;
  line-height: 30px;
  float: left;
  width: 100%;
  margin: 36px 0;
}
.content_us > div:nth-child(1) span img {
  vertical-align: middle;
}
.content_us > div:nth-child(2) img {
  height: 100%;
  width: 100%;
}
@media screen and (max-width: 620px) {
  .content_us div {
    width: 100%;
    max-width: 100%;
    float: left;
  }
}