.jzw-dzw-tit {
  text-align: center;
  margin: 50px 0 50px 0;
  font-size: 28px;
  color: #333333;
  font-weight: bold;
  margin-bottom: 20px;
}
.jzw-main {
  margin-top: 50px;
  display: flex; 
  flex-wrap: wrap;
}
.jzw-item-big {
  margin-bottom: 20px;
  background-image: url('../images/jzw-bg.png');
  width: 18%;
  margin: 1%;
  height: 148px;
  background-size: cover;
}
.jzw-item-big a{
   font-size: 20px; 
   width: 100%;
   height: 100%;
  padding: 20px 45px;
  display: flex;
  align-items: center; 
  text-align: center;
}

.jzw-item-big a:hover{
  background-color: 2a5d84;
  color: #fff;
}