.qualitell-article{
  max-width:1180px;
  margin:0 auto;
  padding:24px 24px 70px;
  font-family:Arial,"Helvetica Neue","Microsoft YaHei",sans-serif;
  color:#20242a;
}

.qualitell-article h1{
  max-width:980px;
  margin:0 auto 18px;
  font-size:32px;
  line-height:1.35;
  font-weight:700;
  color:#20242a;
}

.qualitell-article p{
  max-width:920px;
  margin:26px auto 0;
  font-size:17px;
  line-height:1.85;
  color:#444;
}

.qualitell-article img{
  display:block;
  width:100%;
  max-width:1100px;
  height:auto;
  margin:38px auto;
  border-radius:10px;
}

@media(max-width:768px){
  .qualitell-article{
    padding:20px 18px 55px;
  }

  .qualitell-article h1{
    font-size:27px;
  }

  .qualitell-article p{
    font-size:16px;
  }
}

@media(max-width:600px){
  .qualitell-article{
    padding:10px 15px 45px;
  }

  .qualitell-article h1{
    font-size:23px;
  }

  .qualitell-article p{
    font-size:15px;
    line-height:1.8;
  }

  .qualitell-article img{
    width:calc(100% + 10px);
    margin:30px 0 30px -5px;
    border-radius:6px;
  }
}