.about-box {
  margin: 2.5rem 0 0 0;
  display: -webkit-box;
  display: -moz-box;
  display: -ms-flexbox;
  display: flex;
}

.about-box .right-list {
  margin-left: 2.875rem;
  -webkit-box-flex: 1;
     -moz-box-flex: 1;
      -ms-flex: 1;
          flex: 1;
}

.about-box .right-list .h5-nav_list {
  display: none;
}

.about-box .right-list .step-item {
  padding: 2.125rem;
  margin-bottom: 3.75rem;
  background-color: #fff;
  border-radius: 0.75rem;
  border: 1px solid #EEEEEE;
}

.about-box .right-list .step-item h3 {
  font-size: 1rem;
  color: #333;
  font-weight: bold;
}

.about-box .right-list .step-item p {
  margin-top: 0.625rem;
  font-size: 0.875rem;
  line-height: 1.5rem;
  color: #999;
  font-weight: 400;
}

@media only screen and (max-width: 767px) {
  .about-box {
    margin: 1.5rem 1rem 0 1rem;
  }
  .about-box .right-list {
    margin-left: 0;
    -webkit-box-flex: 1;
       -moz-box-flex: 1;
        -ms-flex: 1;
            flex: 1;
  }
  .about-box .right-list .h5-nav_list {
    display: block;
  }
  .about-box .right-list .step-item {
    padding: 1rem;
    margin-bottom: 1.875rem;
  }
}