body{background-color:#f1f1f1;}
.complain_container{width:100%;padding:1em;    }
.complain_introduction{font-size:1.5em;color:#999;text-align:left;}
.complain_content{width:100%;margin-top:0.5em;position:relative;}
.complain_input{width:100%;height:10em;border:none;border-radius:6px;resize:none;padding-top:1em;}
.complain_number{color:#999;font-size:1.4em;position:absolute;bottom:0.5em;right:0.5em;}
.complain_submit{display:block;width:100%;background-color:#4a88ee;border-radius:4px;border:none;text-align:center;font-size:1.7em;color:#fff;padding:0.6em;margin-top:2em;}
.complain_submit:active{background-color:#417ad6;}