.story_list {
  position: relative;
  width: 960px;
  margin: 60px auto 0;
}

.story_list ul {
  font-size: 0;
  letter-spacing: -.4em;
}

.story_list li {
  display: inline-block;
  width: 300px;
  margin-right: 30px;
  margin-bottom: 40px;
  vertical-align: top;
  font-size: 15px;
  line-height: 1.5;
  letter-spacing: normal;
}

.story_list li:nth-child(3n) {
  margin-right: 0;
}

.story_list li a {
  display: block;
  color: #141d47;
}

.story_list li .story_thumb img {
  width: 100%;
}

.story_list li .story_title {
  margin-top: 10px;
}

.story_detail {
  margin-top: 50px;
}

.story_detail .news_title {
  font-size: 24px;
}

.story_detail .news_txt img {
  max-width: 33.333%;
}

.list_back {
  margin-top: 50px;
}