.social-btns .btn,
.social-btns .btn:before,
.social-btns .btn .fa {
  transition: all 0.35s;
  transition-timing-function: cubic-bezier(0.31, -0.105, 0.43, 1.59);
}
.social-btns .btn:before {
  top: 0;
  left: -110%;
}

.social-btns .btn.facebook:before {
  background-color: #3b5998;
}

.listNotice:focus .btn:before,
.listNotice:hover .btn:before {
  top: 0;
  left: 0;
}
.social-btns .btn {
  display: inline-block;
  background-color: #fff;
  width: 110px;
  height: 40px;
  line-height: 40px;
  margin-top: 20px;
  text-align: center;
  position: relative;
  overflow: hidden;
  border-radius: 5px;
  box-shadow: 0 5px 15px -5px rgba(0, 0, 0, 0.1);
  opacity: 0.99;
}
.social-btns .btn:before {
  content: "查看详情";
  width: 100%;
  text-align: center;
  height: 40px;
  line-height: 40px;
  color: #fff;
  position: absolute;
}
.listNotice:hover .fa{
  color: #fff!important;
  z-index: 11;
}
.banner2{
  width: 100%;
  height: 220px;
}
.banner2 img{
  width: 100%;
  height: 100%;
}