.item_pro_textbox {
  width: 100%;
  max-width: 1200px;
  margin: 40px auto 0;
  
}

.item_pro_textbox .item_pro_text {
  color: rgba(0, 0, 0, 0.65);
  font-size: 18px;
  margin: 0 auto;
  text-align: center;
  width: 78%;
  
}
@media screen and (max-width: 1200px) {
    .item_pro_textbox {
        width: 90%;
    }
  }

@media screen and (max-width: 750px) {
  .item_pro_textbox {
    padding: 0px 15px ;
    margin: 30px auto 0;
  }

  .item_pro_textbox .item_pro_text {
    width: 98%;
    line-height: 36px;
  }
}

@media screen and (max-width: 378px) {
  .item_pro_textbox {
    padding: 0px 15px ;
    margin: 24px auto 0;
  }
  .item_pro_textbox .item_pro_text {
    font-size: 14px;
  }

}