.classification {
  width: 98%;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  margin: 20px auto;
}
.classification_li {
  background: #4B9443;
  color: #fff;
  padding: 5px 5px;
  margin-bottom: 10px;
  margin-right: 5px;
}

.solution_content {
  flex: 1;
  width: 90%;
  margin: 0 auto;
}
.solution_content .title {
  color: #4b9443;
  font-size: 20px;
  font-weight: 500;
  position: relative;
  margin: 15px auto;
  text-align: center;
}
.solution_content .pro_container {
  width: 100%;
}
.solution_content li {
  cursor: pointer;
  margin-bottom: 30px;
  display: flex;
  justify-content: center;
  flex: 0 0 25%;
}
.solution_content li .img-content {
  border: 1px solid #ccc;
  position: relative;
  width: 90%;
}
.solution_content li .img-content .img {
  width: 100%;
  overflow: hidden;
}
.solution_content li .img-content .img img {
  width: 100%;
  display: block;
  transition: all 1s;
}
.solution_content li .img-content .mask {
  width: 100%;
  color: #fff;
  text-align: center;
  line-height: 35px;
  font-size: 14px;
  background-color: rgba(0, 0, 0, 0.7);
  position: absolute;
  bottom: 0;
}
.solution_content li:hover .mask {
  background-color: rgba(75, 148, 67, 0.8);
  color: #fff;
  transition-duration: 1s;
  transition-timing-function: ease;
}
.solution_content li:hover img {
  transform: scale(1.1);
  transition-duration: 0.4s;
  transition-timing-function: ease;
}
.page {
  display: flex;
  justify-content: center;
}