.chosing {
  margin-top: 30px;
}
.chosing li {
  display: inline-block;
  float: left;
  width: 24%;
  margin-left: 1.3%;
  background: #e5e5e5;
  text-align: center;
}
.chosing li a {
  font: 16px/30px Microsoft YaHei, "微软雅黑";
  color: #666;
}
.chosing li:first-child {
  margin: 0;
}
.chosing li:hover,
.chosing li:active {
  background: #3a9fec;
}
.chosing li:hover a,
.chosing li:active a {
  color: #fff;
}
.download {
  border-top: 2px solid #eee;
  margin-top: 26px;
}
.download ul {
  margin-top: 10px;
}
.download li {
  width: 100%;
  border-bottom: 1px solid #eee;
}
.download li p {
  font: 14px/54px Microsoft YaHei, "微软雅黑";
  color: #666;
}
.download li p:last-child {
  float: right;
}
.download li a {
  font: 14px/14px Microsoft YaHei, "微软雅黑";
  float: right;
  background: #3a9fec;
  color: #fff;
  padding: 10px 20px;
  margin: 10px  0;
  margin-left: 14px;
}
@media (max-width: 767px) {
  .chosing li a span {
    display: block;
  }
}