.sutong-sidebanner {
  position: relative;
      z-index: -1;
}

.sutong-sidebanner img {
  width: 100%
}

.sutong-sidebanner .txt {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 100%;
  left: 0;
  right: 0;
  display: flex;
  align-items: center
}

.sutong-sidebanner .txt h1,.sutong-sidebanner .txt h2,
.sutong-sidebanner .txt h3 {
  color: #fff;
  font-size: 36px;
  line-height: 1;
  font-weight: 700;
  text-shadow: 2px 2px 4px #666;
}

.sutong-sidebanner .txt p {
  color: #fff;
  font-size: 15px;
  margin: 25px 0 0;
  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
  text-shadow: 2px 2px 4px #666;
}

.sutong-sidebanner .txt p a {
  color: #fff;
  text-shadow: 2px 2px 4px #666;
}

@media screen and (max-width: 1441px) {

  .sutong-sidebanner .txt h1,.sutong-sidebanner .txt h2,
  .sutong-sidebanner .txt h3 {
    font-size: 34px
  }
}

@media screen and (max-width: 1367px) {

  .sutong-sidebanner .txt h1,.sutong-sidebanner .txt h2,
  .sutong-sidebanner .txt h3 {
    font-size: 32px
  }
}

@media screen and (max-width: 1281px) {

  .sutong-sidebanner .txt h1,.sutong-sidebanner .txt h2,
  .sutong-sidebanner .txt h3 {
    font-size: 30px
  }
}

@media screen and (max-width: 1171px) {

  .sutong-sidebanner .txt h1,.sutong-sidebanner .txt h2,
  .sutong-sidebanner .txt h3 {
    font-size: 28px
  }
}

@media screen and (max-width: 992px) {

  .sutong-sidebanner .txt h1,.sutong-sidebanner .txt h2,
  .sutong-sidebanner .txt h3 {
    font-size: 26px
  }
}

@media screen and (max-width: 768px) {
  .sutong-sidebanner .txt {
    text-align: center
  }

  .sutong-sidebanner .txt h1,.sutong-sidebanner .txt h2,
  .sutong-sidebanner .txt h3 {
    font-size: 24px
  }

  .sutong-sidebanner .txt p {
    margin: 10px 0 0
  }
}