.container-box {
  text-align: center;
}

.flex-space {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.container-box .banner {
  height: 350px;
  background: url("1-bg-1366.png") center center no-repeat;
  background-size: cover;
  color: #fff;
  display: flex;
  justify-content: center;
  flex-direction: column;
  align-items: center;
}

.container-box .banner h1 {
  font-size: 50px;
  line-height: 50px;
  margin-bottom: 35px;
  font-weight: 200;
}

.container-box .banner p {
  font-size: 26px;
  font-weight: 200;
  margin-bottom: 35px;
}

.container-box .banner button {
  cursor: pointer;
  width: 180px;
  height: 54px;
  line-height: 54px;
  border-radius: 4px;
  background-color: #39c;
  color: #fff;
  font-size: 18px;
}


.container-box .title {
  padding-top: 70px;
  font-size: 40px;
  color: #3d4450;
  font-weight: 200;
}


.container-box .item-outer {
  padding: 80px 0;
  background-color: #f8f8f8;
}

.container-box .item-outer .detail {
  width: 75%;
  max-width: 1200px;
  margin: 0 auto;
}

.container-box .item-outer .detail .img-outer {
  width: 560px;
}

.container-box .item-outer .detail .img-outer img {
  max-width: 100%;
}

.container-box .item-outer .detail .describe {
  max-width: 390px;
  text-align: left;
  display: flex;
  align-items: center;
}

.container-box .item-outer .detail .describe h1 {
  font-size: 26px;
  color: #666;
  line-height: 42px;
  margin-bottom: 40px;
  font-weight: 400;
}

.container-box .item-outer .detail .describe p {
  font-size: 16px;
  line-height: 1.5em;
  color: #808080;
  margin-bottom: 24px;
}

.container-box .item-outer .detail .describe .item-list {
  display: flex;
  flex-wrap: wrap;
  width: fit-content;
}

.container-box .item-outer .detail .describe .item-list li {
  font-size: 16px;
  color: #808080;
  line-height: 30px;
}

.container-box .item-outer .detail .describe .item-list li:nth-child(2n) {
  width: 195px;
}

.container-box .item-outer .detail .describe .item-list li:nth-child(2n - 1) {
  width: 195px;
}

.container-box .item-outer .detail .describe .item-list li .dot {
  display: block;
  height: 8px;
  width: 8px;
  background-color: #39c;
  border-radius: 50%;
  float: left;
  margin: 10px 10px 0 5px;
  box-shadow: 0 0 5px rgba(51, 153, 204, 0.9);
}

.container-box .item-outer .detail .describe button {
  margin-top: 40px;
  width: 120px;
  height: 36px;
  line-height: 36px;
  border-radius: 18px;
  background-color: #39c;
  color: #fff;
  cursor: pointer;
}

.container-box .item-outer .detail .describe button:hover {
  box-shadow: 0 10px 16px 0 rgba(0, 199, 179, 0.3);
}

.container-box .item-outer:nth-child(odd) {
  background-color: #fff;
}

.container-box .item-outer:nth-child(even) .inside {
  flex-direction: row-reverse;
}