.sutong-subscribe {
  padding: 20px 0 50px;
  text-align: center
}

.sutong-subscribe h5 {
  font-size: 34px;
  color: #212121;
  font-weight: 700;
  line-height: 1.47;
  position: relative;
  margin: 50px 0 0
}

.sutong-subscribe h5::after {
  display: block;
  content: 'Contact us';
  font-weight: 700;
  white-space: nowrap;
  color: #fff;
  position: absolute;
  left: 0;
  right: 0;
  top: -35px;
  font-size: 98px;
  line-height: 1;
  z-index: -1;
  text-shadow: rgba(210, 217, 221, .75) 1px 0 0, rgba(210, 217, 221, .75) 0 1px 0, rgba(210, 217, 221, .75) -1px 0 0, rgba(210, 217, 221, .75) 0 -1px 0
}

.sutong-subscribe h5 strong {
  font-weight: 600
}

.sutong-subscribe .form-box {
  margin: 23px auto 0;
  width: 620px;
  position: relative;
  display: -webkit-flex;
  display: flex;
  -webkit-align-items: center;
  align-items: center
}

.sutong-subscribe .submit_text {
  width: 100%;
  height: 80px;
  line-height: 80px;
  color: #666;
  padding: 0 90px 0 10px;
  font-size: 17px;
  font-weight: 500;
  background: #fff;
  border-bottom: 2px solid #f0f0f0
}

.sutong-subscribe input::-webkit-input-placeholder,
.sutong-subscribe input::-moz-placeholder {
  color: #666;
  opacity: 1
}

.sutong-subscribe .submit_btn {
  position: absolute;
  right: 0;
  top: 0;
  /* width: 80px; */
  /* height: 80px; */
  display: block;
  cursor: pointer;
  text-align: center;
  font-size: 18px;
  font-weight: bold;
  background: var(--btn-bg);
  color: #FFF;
  padding: 20px 40px;
}

.sutong-subscribe .submit_btn:hover {
  opacity: .7
}

.sutong-subscribe .submit_btn i {
  font-size: 35px;
  color: #50a9b5
}

@media screen and (max-width: 1441px) {
  .sutong-subscribe h5::after {
    font-size: 90px
  }

  .sutong-subscribe h5 {
    font-size: 32px
  }
}

@media screen and (max-width: 1367px) {
  .sutong-subscribe h5::after {
    font-size: 80px
  }

  .sutong-subscribe h5 {
    font-size: 30px
  }
}

@media screen and (max-width: 1281px) {
  .sutong-subscribe h5::after {
    font-size: 70px
  }

  .sutong-subscribe h5 {
    font-size: 28px
  }
}

@media screen and (max-width: 1171px) {
  .sutong-subscribe h5::after {
    font-size: 60px
  }

  .sutong-subscribe h5 {
    font-size: 26px
  }

  .sutong-subscribe {
    padding: 20px 0 0
  }

  .sutong-subscribe .form-box {
    width: 90%
  }

  .sutong-subscribe .submit_text {
    height: 60px;
    line-height: 60px;
    font-size: 16px;
    padding: 0 70px 0 10px
  }

  .sutong-subscribe .submit_btn {
    width: 70px;
    height: 60px
  }
}

@media screen and (max-width: 768px) {
  .sutong-subscribe h5::after {
    font-size: 50px
  }

  .sutong-subscribe h5 {
    font-size: 26px
  }

  .sutong-subscribe {
    padding: 20px 0 0
  }

  .sutong-subscribe .form-box {
    width: 90%
  }

  .sutong-subscribe .submit_text {
    height: 60px;
    line-height: 60px;
    font-size: 16px;
    padding: 0 70px 0 10px
  }

  .sutong-subscribe .submit_btn {
    width: 70px;
    height: 60px
  }
    
    .sutong-subscribe .submit_btn{
    padding:0 !important;
    }
}


@media screen and (max-width: 576px) {
  .sutong-subscribe h5 {
    font-size: 24px
  }

  .sutong-subscribe h5::after {
    font-size: 40px
  }

  .sutong-subscribe .form-box {
    width: 100%
  }

}

@media screen and (max-width: 480px) {
  .sutong-subscribe h5::after {
    font-size: 30px
  }

  .sutong-subscribe h5 {
    font-size: 22px
  }
}