.qualityList li {
  box-sizing: border-box;
}

.qualityList, .articleTitle, .textEditor, .btnBox {
  transition: all .5s ease-out;
}

.qualityList, .articleTitle, .textEditor, .btnBox {
  opacity: 0;
}

.qualityList, .articleTitle, .textEditor, .btnBox {
  -webkit-transform: translateY(20px);
      -ms-transform: translateY(20px);
          transform: translateY(20px);
}

.mainArea.show .qualityList, .mainArea.show .articleTitle, .mainArea.show .textEditor, .mainArea.show .btnBox {
  -webkit-transform: translate(0);
      -ms-transform: translate(0);
          transform: translate(0);
  opacity: 1;
}

.mainArea.show .classBox {
  transition-delay: 1s;
}

.mainArea.show .qualityList {
  transition-delay: 1.5s;
}

.mainArea.show .articleTitle {
  transition-delay: 1s;
}

.mainArea.show .textEditor {
  transition-delay: 1.5s;
}

.mainArea.show .btnBox {
  transition-delay: 2s;
}

.qualityList {
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-flex-wrap: wrap;
      -ms-flex-wrap: wrap;
          flex-wrap: wrap;
  margin-left: -10px;
  margin-right: -10px;
}

.qualityList li {
  width: calc(100% / 3);
  padding-left: 10px;
  padding-right: 10px;
  padding-bottom: 20px;
}

.qualityList .item {
  padding: 20px;
  background-color: #fff;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.qualityList .Img img {
  display: block;
  width: 100%;
  -webkit-backface-visibility: hidden;
          backface-visibility: hidden;
}

.qualityList h3 a {
  display: block;
  padding-top: 10px;
  padding-bottom: 10px;
  font-size: 20px;
  text-align: center;
  letter-spacing: 1px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.qualityList p {
  max-height: 90px;
  line-height: 1.8;
}

.articleTitle {
  font-size: 30px;
  font-family: "Noto Serif TC", serif;
  border-bottom: none;
}

@media (max-width: 768px) {
  .qualityList li {
    width: 50%;
  }
}

@media (max-width: 480px) {
  .qualityList li {
    width: 100%;
  }
  .qualityList h3 a {
    padding-top: 5px;
    padding-bottom: 5px;
  }
  .articleTitle {
    font-size: 26px;
  }
}