.side-bar-right {
  opacity: 1;
  position: fixed;
  right: 0;
  top: 40%;
  z-index: 100;
}

.side-bar-right ul {
  width: 50px;
  background-color: #f5f5f5;
}

.side-bar-right li {
  border-bottom: 1px solid #e5e5e5;
  cursor: pointer;
  background-size: contain;
  padding-top: 100%;
  height: 0;
}

.side-bar-right img {
  width: 100%;
}

/* .side-bar-right-activity {
  background: url(https://source.tutorabc.com.cn/ext/images/website/tutorabc/other/member/activity.png) center center no-repeat;
}

.side-bar-right-activity:hover {
  background: url(https://source.tutorabc.com.cn/ext/images/website/tutorabc/other/member/app_hover.png) center center no-repeat;
  background-size: cover;
} */

.side-bar-right-app {
  background: url(https://source.tutorabc.com.cn/ext/images/website/tutorabc/other/member/app.png) center center no-repeat;
}

.side-bar-right-app:hover {
  background: url(https://source.tutorabc.com.cn/ext/images/website/tutorabc/other/member/app_hover.png) center center no-repeat;
  background-size: cover;
}

.side-bar-right-wechat {
  background: url(https://source.tutorabc.com.cn/ext/images/website/tutorabc/other/member/wechat.png) center center no-repeat;
}

.side-bar-right-wechat:hover {
  background: url(https://source.tutorabc.com.cn/ext/images/website/tutorabc/other/member/wechat_hover.png) center center no-repeat;
  background-size: cover;
}

.side-bar-right-contact {
  background: url(https://source.tutorabc.com.cn/ext/images/website/tutorabc/other/member/contact.png) center center no-repeat;
}

.side-bar-right-contact:hover {
  background: url(https://source.tutorabc.com.cn/ext/images/website/tutorabc/other/member/contact_hover.png) center center no-repeat;
  background-size: cover;
}

.side-bar-right-cooperation {
  background: url(https://source.tutorabc.com.cn/ext/images/website/tutorabc/other/member/cooperation.png) center center no-repeat;
}

.side-bar-right-cooperation:hover {
  background: url(https://source.tutorabc.com.cn/ext/images/website/tutorabc/other/member/cooperation_hover.png) center center no-repeat;
  background-size: cover;
}

.side-bar-right-vjr {
  background: url(https://source.tutorabc.com.cn/ext/images/website/tutorabc/other/member/vjr.png) center center no-repeat;
}

.side-bar-right-vjr:hover {
  background: url(https://source.tutorabc.com.cn/ext/images/website/tutorabc/other/member/vjr_hover.png) center center no-repeat;
  background-size: cover;
}

.side-bar-right-top {
  background: url(https://source.tutorabc.com.cn/ext/images/website/tutorabc/other/member/top.png) center center no-repeat;
}

.side-bar-right-top:hover {
  background: url(https://source.tutorabc.com.cn/ext/images/website/tutorabc/other/member/top_hover.png) center center no-repeat;
  background-size: cover;
}

.side-bar-right-img {
  position: absolute;
  right: 46px;
  width: 200px;
}

.side-bar-right-img-app {
  display: none;
  top: -124px;
}

.side-bar-right-img-wechat {
  display: none;
  top: -78px;
}