.content {
  background: -webkit-gradient(linear, left top, left bottom, from(#1E1E1E), to(#303030));
  background: linear-gradient(to bottom, #1E1E1E, #303030);
}

.content .main {
  margin: auto;
  width: 1200px;
}

.content .main .top {
  padding-top: 13px;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
}

.content .main .top .logo {
  width: 41px;
  height: 37px;
  background: url("../images/logo.png");
}

.content .main .top .name {
  margin-left: 14px;
  font-size: 24px;
  font-weight: bold;
  color: #fff;
}

.content .main .indown {
  margin-top: 29px;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
}

.content .main .indown .left {
  margin-top: 80px;
}

.content .main .indown .left .title {
  margin-bottom: 21px;
  font-size: 60px;
  font-weight: bold;
  color: #fff;
}

.content .main .indown .left .cont {
  font-size: 26px;
  color: #fff;
}

.content .main .indown .left .down {
  margin-top: 30px;
  padding-left: 20px;
  width: 296px;
  height: 60px;
  background: url("../images/btn.png");
  cursor: pointer;
  color: #fff;
  font-size: 22px;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
}

.content .main .indown .left .down:hover {
  background-position: -296px 0;
}

.content .main .indown .left .system {
  margin-top: 33px;
  color: #D6D6D6;
  font-size: 20px;
}

.content .main .indown .left .version_update_time {
  margin-top: 25px;
  color: #D6D6D6;
  font-size: 20px;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
}

.content .main .indown .left .version_update_time .update_time {
  margin-left: 30px;
}

.content .main .indown .right img {
  width: 660px;
  height: 490px;
}

.content .main .list {
  margin-top: 173px;
  margin-bottom: 62px;
}

.content .main .list ul {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
}

.content .main .list ul li {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  width: 290px;
}

.content .main .list ul li img {
  margin-bottom: 34px;
  width: 100px;
  height: 100px;
}

.content .main .list ul li .title {
  margin-bottom: 18px;
  font-size: 24px;
  font-weight: bold;
  color: #fff;
}

.content .main .list ul li p {
  font-size: 18px;
  color: #F1F1F1;
  text-align: center;
}

.content .footer {
  height: 78px;
  background: #FFFFFF;
}

.content .footer .info {
  line-height: 78px;
  text-align: center;
  font-size: 14px;
  color: #0A0A0A;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -ms-flex-pack: distribute;
      justify-content: space-around;
}