.centerPa{ text-align:center} 
    .rightPa{ text-align:right}
    .colorPa{ color: #646464}
    .mdl-card_expand--wide{ width: auto }

    .mdl-card_expand--pictureA{
      background: url('004.jpg') center / cover;}
    .mdl-card_expand--pictureB{
      background: url('002.jpg') center / cover;}
    .mdl-card_expand--pictureC{
      background: url('003.jpg') center / cover;}
    .mdl-card_expand--pictureD{
      background: url('001.jpg') center / cover;} 
    .mdl-card_expand--pictureE{
      background: url('005.jpg') center / cover;} 

    .black-height-6px{ height: 12px }
    .mdl-index main > .mdl-layout__tab-panel {
      padding: 8px;
      padding-top: 24px;
    }
    .mdl-index .mdl-layout__tab-bar-button {
      display: none;
    }
    .mdl-index .mdl-layout__tab-bar .mdl-layout__tab.is-active::after {
      background-color: white;
      height: 4px;
    }
    .mdl-index .mdl-layout__tab-bar {
      padding: 0 0 0 20%;
      margin:0 auto;
      box-sizing: border-box;
      height: 100%;
      width: 100%;
    }
    .mdl-index main > .mdl-layout__tab-panel .mdl-expand-left {background: #fff}
    .mdl-index main > .mdl-layout__tab-panel .mdl-expand-right {background: #fff}
    .mdl-index main > .mdl-layout__tab-panel .mdl-card__title {
      color: #fff;
      height: 368px;
    }

    .demo-content {
      border-radius: 2px;
      padding: 80px calc(8% - 16px);
      margin-bottom: 80px;
    }
    .demo-container {
      max-width: 1600px;
      width: calc(100% - 16px);
      margin: 0 auto;
    }
    .deoo {
      width: 100%;
    }
    .deoa {
      width: 80%;
      margin: 0 10%
    }
    .deo40 {
      width: 40%;
      margin: 0 30%;
    }
    .deo60 {
      width: 60%;
      margin: 0 20%;
    }
    .core-color{
      background: #f5f5f5;
    }
    .demo-content h3 {
      margin-top: 24px;
      text-align:center;
      font-weight: bold;
    }
    .demo-content h4 {
      font-weight: bold;
    }
    .demo-content h6 {
      font-weight: bold;
    }
    .demo-content a {
      word-break:break-all;
    }