body {
  background-image: url(../images/activity/0430-01.png);
  background-size: cover;
  background-repeat: no-repeat;
  background-position: 50% 10%;
}

.activty_width {
  width: 1100px;
  margin: 0 auto;
}

.activty {
  display: flex;
  flex-direction: column;
  background-size: cover;
  background-position: 50% top;
  padding-bottom: 50px;
  margin-top: 55%;
  color: #333333;
}
.activty .activeity_box {
  margin-top: 30px;
}
.activty .activeity_box .act_title {
  position: relative;
  padding-bottom: 10px;
  text-align: center;
  color: #fff;
  font-size: 44px;
  font-weight: 600;
}
.activty .activeity_box .act_title img {
  position: absolute;
  bottom: 0;
  width: 230px;
  height: 180px;
  z-index: 2;
}
.activty .activeity_box .act_title .horn {
  left: 0;
  bottom: -10px;
}
.activty .activeity_box .act_title .tree_rigth {
  right: -80px;
  bottom: -50px;
}
.activty .activeity_box .act_title .tree_left {
  left: -80px;
  bottom: -50px;
}
.activty .activeity_box .activity_platform {
  border-radius: 30px;
  text-align: center;
}
.activty .activeity_box .activity_platform .title {
  border-radius: 30px 30px 0 0;
  position: relative;
  background-color: #3ea856;
  padding-top: 22px;
  padding-bottom: 44px;
  color: #fff;
  font-size: 24px;
}
.activty .activeity_box .activity_platform .title .act_left {
  position: absolute;
  top: 0;
  left: -50px;
  transform: translateY(-54%);
  width: 230px;
  height: 210px;
}
.activty .activeity_box .activity_platform .title .act_right {
  position: absolute;
  top: 0;
  right: -50px;
  transform: translateY(-54%);
  width: 230px;
  height: 210px;
}
.activty .activeity_box .activity_platform .platform_item {
  position: relative;
  top: -30px;
  padding: 40px;
  background-color: #FFF7ED;
  border-radius: 30px;
}
.activty .activeity_box .activity_platform .platform_item .plat_title {
  position: relative;
  display: inline-block;
  padding: 0 55px;
  color: #02aa76;
}
.activty .activeity_box .activity_platform .platform_item .plat_title img {
  position: absolute;
  top: 30%;
  transform: translateY(-50%);
  width: 100px;
  height: 100px;
}
.activty .activeity_box .activity_platform .platform_item .plat_title img:nth-of-type(1) {
  left: -15px;
}
.activty .activeity_box .activity_platform .platform_item .plat_title img:nth-of-type(2) {
  right: -15px;
}
.activty .activeity_box .activity_platform .platform_item .plat_title span {
  font-size: 20px;
  font-weight: 500;
}
.activty .activeity_box .activity_platform .platform_item > ul {
  display: flex;
  flex-wrap: wrap;
  margin-top: 10px;
}
.activty .activeity_box .activity_platform .platform_item > ul li {
  width: 18%;
  height: 70px;
  margin-top: 20px;
  margin-right: 20px;
  border-radius: 5px;
  overflow: hidden;
}
.activty .activeity_box .activity_platform .platform_item > ul li:nth-child(5n) {
  margin-right: 0;
}
.activty .activeity_box .activity_platform .platform_item .activity_equity {
  display: flex;
  background-color: #FFF7ED;
  box-sizing: border-box;
}
.activty .activeity_box .activity_platform .platform_item .activity_equity .eq_left {
  position: relative;
  flex: 0 0 auto;
  width: 30%;
  height: 230px;
  color: #fff;
  background-image: url(../images/activity/0430-07.png);
  background-size: cover;
}
.activty .activeity_box .activity_platform .platform_item .activity_equity .eq_right {
  margin-top: 20px;
  margin-left: 40px;
  text-align: left;
}
.activty .activeity_box .activity_platform .platform_item .activity_equity .eq_right .eq_title {
  position: relative;
  left: -30px;
}
.activty .activeity_box .activity_platform .platform_item .activity_equity .eq_right ul {
  margin-top: 10px;
  text-align: left;
  font-size: 16px;
}
.activty .activeity_box .activity_platform .platform_item .activity_equity .eq_right ul li {
  margin-bottom: 5px;
}
.activty .activeity_box .activity_platform .platform_item .activity_table {
  width: 100%;
  font-size: 18px;
  box-sizing: border-box;
  border: 1px solid #8bc2b3;
  border-collapse: collapse;
}
.activty .activeity_box .activity_platform .platform_item .activity_table tr th {
  padding: 15px 0;
  border: 1px solid #8bc2b3;
  font-size: 16px;
}
.activty .activeity_box .activity_platform .platform_item .activity_table tr td {
  font-size: 14px;
  padding: 30px 0;
  border: 1px solid #8bc2b3;
}
.activty .activeity_box .activity_platform .platform_item .activity_table tr:nth-child(2n) {
  background-color: #e1eed8;
}
.activty .activeity_box .activity_platform .platform_item .activity_table tr:nth-child(1) {
  background-color: #bcdebb;
}
.activty .activeity_box .activity_platform .platform_item .step {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.activty .activeity_box .activity_platform .platform_item .step .step_item .step_img {
  width: 100px;
  height: 95px;
  margin: 0 auto;
}
.activty .activeity_box .activity_platform .platform_item .step .step_item span {
  font-size: 18px;
  font-weight: 600;
}
.activty .activeity_box .activity_platform .platform_item .step .step_item p {
  font-size: 16px;
}
.activty .activeity_box .activity_platform .platform_item .step .line {
  width: 16%;
  height: 20px;
  transform: translateY(-100%);
  background-image: url(../images/activity/0430-02.png);
  background-size: 100%;
  background-repeat: no-repeat;
  background-position: 50% 50%;
}
.activty .activity_rules {
  color: #fff;
}
.activty .activity_rules .rules_title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 5px;
  line-height: 20px;
}
.activty .activity_rules .rules_item {
  font-size: 12px;
}
.activty .activity_rules .rules_item li {
  margin-bottom: 4px;
}
.activty .activity_rules .rules_item li span {
  font-weight: 600;
  font-family: 'SimHei, "Microsoft YaHei", sans-serif';
}
.activty .activity_rules .rules_item li p {
  padding-left: 2em;
  line-height: 25px;
}
.activty .activity_rules .participate {
  margin-top: 50px;
  font-size: 25px;
}
.activty .activity_rules .participate .participate_title {
  font-size: 16px;
  margin-bottom: 5px;
}
.activty .activity_rules .participate .participate_btn {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 200px;
  padding: 5px 0;
  margin-left: 10px;
  border-radius: 25px;
  font-size: 24px;
  font-weight: 600;
  background-color: #ffc23a;
  text-align: center;
  box-shadow: 0 0 1px 1px black;
  transition: all 0.5s;
  cursor: pointer;
}
.activty .activity_rules .participate .participate_btn a {
  color: #fff;
}
.activty .activity_rules .participate .participate_btn:hover {
  transform: scale(1.1);
}

@media screen and (max-width: 1280px) {
  .activty {
    margin-top: 65%;
  }
}
@media screen and (max-width: 1024px) {
  .activty {
    margin-top: 75%;
  }
}