.box {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  margin-top: 55px;
}
.box li {
  width: 380px;
  height: 280px;
  background: #829e4a;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}
.box li:nth-child(4) {
  width: 790px;
}
.box li:nth-child(n+4) {
  margin-top: 30px;
}
.box li h3 {
  font-size: 30px;
  color: #fff;
  font-weight: normal;
  line-height: 30px;
  margin-bottom: 25px;
}
.box li p {
  font-size: 22px;
  color: #fff;
  line-height: 35px;
  padding: 0 35px;
}
.box li span {
  display: block;
  width: 150px;
  height: 45px;
  line-height: 45px;
  border-radius: 22.5px;
  margin: 40px auto 0;
  color: #829e4a;
  font-size: 18px;
  background: url(../image/jt.png) no-repeat right 15px center #fffdff;
  background-size: auto 32px;
  text-indent: -20px;
}