/* 首页样式 */
section {
  width: 1466px;
  margin: 87px auto 54px;
  text-align: center;
}

.ad-img {
  width: 100%;
  height: 400px;
  opacity: 1;
}

.content {
  margin-top: 41px;
}

.content .title {
  position: relative;
  box-sizing: border-box;
  width: 163px;
  height: 42px;
  line-height: 42px;
  border-radius: 2px;
  background: rgba(31, 34, 42, 1);
  text-align: left;
  margin-bottom: 17px;
}
.content .title span {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0px;
  color: rgba(229, 229, 229, 1);
}
.content .title span::before {
  content: '';
  display: inline-block;
  width: 8px;
  height: 18px;
  opacity: 1;
  border-radius: 2px;
  background: rgba(255, 195, 0, 1);
  margin: 0 15px;
  vertical-align: middle;
}
.content .title .triangle-down {
  position: absolute;
  top: -4px;
  right: -16px;
  width: 0;
  height: 0;
  border-left: 26px solid transparent;
  border-right: 26px solid transparent;
  border-top: 26px solid #242c3b; /* Change 'black' to the color you want */
  transform: rotate(224deg); /* 将矩形旋转并变形为三角形 */
}