.quality-item-list{font-size: 0; margin-right: 13%; margin-left:13%;margin-top: 132px;}
.quality-item-list .item{
  display: inline-block;
  width: calc(100% / 2 - 32px);
  margin-bottom: 60px;
  font-size: 1rem;
}
.quality-item-list .item:nth-of-type(odd){
  margin-right: 32px;
}

.quality-item-list .item .title,.quality-item-list .item .sub-title{display: inline-block; margin-bottom: 0.6rem;}
.quality-item-list .item .title{margin-right: 1rem}

@media screen and (min-width: 0) and (max-width: 640px) {
  .quality-item-list{margin-top: 66px;margin-right: 4%; margin-left: 4%}
  .quality-item-list .item{display: block;width: 100%;margin-right: 0;margin-bottom: 30px;}
  }
}