.install-top-backg{
  width:100%;
  height:300px;
  margin-top:90px;
  background:url('../images/background02.png') no-repeat 0 0;
  background-size:100% 300px;
}
.install-top-backg img{
  opacity: .8;
  width:60px;
  height:60px;
}
.install-top-backg h3{
  margin-top:40px;
  color:#fff;
  font-size:36px;
  text-align:center;
}
.install-top-backg p{
  margin-top:22px;
  text-align: center;
}
.install-top-backg p a{
  color:#ffec6d;
  font-size:20px;
  text-decoration:none;
}
.install-guide{
  margin-top:70px;
  width:100%;
}
.install-guide h3{
  width:100%;
  font-size:30px;
  text-align:center;
}
.install-guide h3 a{
  font-size:14px;
  margin-left:20px;
  color:#639c1f;
}
.install-contant-box{
  margin-top:30px;
  border-top:1px solid #ebebeb;
}
.contant-items{
  margin-top:60px;
}
.contant-items .items-img{
  margin-top:10px;
  text-align:center;
  position:relative;
}
.items-img .items-position{
  position:absolute;
  top:50%;
  left:50%;
  width:50px;
  transform:translate(-50%,-50%);
  text-align: center;
}
.contant-items .items-left-text{
  margin-top:20px;
}
.items-left-text h4{
  font-size:22px;
  color:#639c1f;
}
.items-left-text p{
  margin-top:30px;
  font-size:16px;
  line-height:30px;
}
.install-btm{
  margin-top:50px;
  height:1135px;
  border:1px solid #ebebeb;
}
.install-btm .btm-top{
  width:100%;
  height:80px;
  background-color:#f4f4f4;
}
.btm-top img{
  margin-left:20px;
}
.btm-top p{
  font-size:20px;
  color:#616161;
  margin-left:14px;
}
.btm-btm{
  width:100%;
}
.btm-left-img img{
  margin-top:35px;
}
.btm-text-box h4{
  font-size:28px;
}
.btm-text-box ul{
  margin-top:30px;
}
.btm-text-box ul li{
  margin-top:12px;
  font-size:16px;
}
.btm-text-box ul li img{
  margin:0 12px 3px 0;
}
.btm-right-btn p{
  color:#ef6c03;
  width:170px;
  font-size:26px;
  font-weight:600;
  text-align:end;
}
.btm-right-btn p span{
  color:#9D9E9E;
  font-size:16px;
  font-weight:500;
  text-decoration:line-through;
}
.dload-btn-box{
  width:170px;
  height:48px;
  margin-top:15px;
  border-radius:10px;
  background-color:#80c132;
}
.dload-btn-box :hover{
  border-radius:10px;
  background-color:#659f21;
}
.dload-btn-btm{
  background-color:#ee6d02;
}
.dload-btn-btm :hover{
  background-color:#d15f02;
}
.dload-btn-box a{
  display:inline-block;
  text-decoration: none;
  width:100%;
  height:100%;
  line-height:48px;
  color:#fff;
  font-size:18px;
  padding:0 5px 0 10px;
}
@media (min-width: 350px){
}
@media (min-width: 768px){
  .contant-items .items-left-text{
    margin-top:0;
  }
  .install-top-backg{
    margin-top:110px;
  }
  .btm-btm{
    width:750px;
  }
  .install-btm{
    height:900px;
  }
}

@media (min-width: 992px){
  .contant-items .items-left-text{
    margin-left:30px;
  }
  .btm-btm{
    width:990px;
  }
  .install-btm{
    height:435px;
  }
}

@media (min-width: 1200px){
  .btm-btm{
    width:1150px;
  }
}