.problem-box,
.products-box,
.contact-box{
  margin-top: 70px;
  min-height: calc(100vh - 292px);
}
.problem-list-box{
  width: 1200px;
  max-width: 100%;
  display: block;
  margin: 0 auto;
}
.problem-list{
  font-size: 0;
  border: 1px solid #ddd;
  border-left: 0;
  border-right: 0;
  padding: 5px 0;
}
.problem-list-title-box{
  display: block;
  cursor: pointer;
}
.problem-icon .problem-list-title{
  color: #90c31f;
  font-weight: bold;
}
.problem-list-title-line{
  width: 3px;
  height: 40px;
  vertical-align: top;
  display: inline-block;
  background-color: #0ba39b;
}
.problem-list-title-Q,
.problem-list-title{
  display: inline-block;
  vertical-align: top;
  font-size: 16px;
  padding-top: 8px;
  letter-spacing: 2px;
}
.problem-list-title-Q{
  color: #f39800;
  font-weight: bold;
  display: inline-block;
  vertical-align: top;
  width: 30px;
  text-align: center;
}
.problem-list-title{
  width: calc(100% - 63px);
  color: #555;
}
.problem-list-icon{
  display: inline-block;
  width: 30px;
  vertical-align: top;
  padding-top: 2px;
  font-size: 20px;
  color: #0ba39b;
}
.problem-list-article{
  font-size: 14px;
  color: #555;
  letter-spacing: 2px;
  line-height: 2;
  text-align: justify;
  padding-left: 33px;
  box-sizing: border-box;
  display: none;
}