.product-box {
  position: relative;
  width: 1000px;
  margin: 50px auto 0;
}
.product-box::after {
  content: "020"; 
  display: block; 
  height: 0; 
  clear: both; 
  visibility: hidden;  
}
.product-box a {
  display: block;
  float: left;
  width: 360px;
  height: 252px;
  background-color: #fff;
  margin-right: 20px;
  box-shadow: 0 0 10px 1px rgba(0,0,0,.3);
  transition: all 0.2s ease;
  text-decoration: none;
}
.product-box a:hover {
  transform: scale(1.03);
}
.product-box img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  display: block;
}
.product-box p {
  color: #000;
  font-size: 16px;
  line-height: 32px;
  text-indent: 10px;
  margin: 0;
  padding: 0;
}
.product-wrap {
  position: relative;
  width: 960px;
  margin: 50px auto 0;
}
.product-wrap::after {
  content: "020"; 
  display: block; 
  height: 0; 
  clear: both; 
  visibility: hidden;  
}

.product-wrap .cover {
  width: 360px;
  display: block;
  float: left;
}

.product-detail {
  width: 555px;
  float: right;
}

.product-detail .title {
  font-size: 20px;
  font-weight: bold;
}

.product-detail .text {
  line-height: 24px;
}

.product-detail .down-btn.android {
  background-position: -137px 0;
  width: 137px;
}

.product-detail .down-btn {
  background: url(./img/down_btn_sidebar.png);
  color: #239971;
  float: left;
  font-size: 16px;
  font-weight: bold;
  height: 58px;
  line-height: 99;
  overflow: hidden;
  text-decoration: none;
  width: 138px;
}