.page-main{text-align:center}#input_text{padding:8px;width:400px;height:100px;border:1px solid #ddd;outline:none;font-size:13px;line-height:1.5}button{margin-top:10px;width:100px;height:36px;background-color:#187cff;border:none;border-radius:3px;outline:none;color:#fff;font-size:14px}