/* demo演示用 */
body,
html,
div,
input,
p {
  margin: 0;
  padding: 0;
  font-family: Arial, Helvetica, 'Microsoft Yahei';
}
.maincon {
  padding: 30px;
}
label {
  font-size: 24px;
  height: 40px;
  line-height: 40px;
  width: 80px;
  float: left;
  font-weight: bold;
}
.input-con {
  margin-left: 80px;
}
.input-con input {
  -webkit-box-sizing: border-box;
          box-sizing: border-box;
  height: 40px;
  width: 300px;
  font-size: 20px;
  border-radius: 5px;
  line-height: 40px;
  border: 1px solid #ccc;
  text-indent: 10px;
}
.input-con .btn {
  width: 70px;
  height: 40px;
  margin: 0 5px;
  cursor: pointer;
  line-height: 40px;
  display: inline-block;
  text-align: center;
  border-radius: 5px;
  background: #1f6cb2;
  font-size: 20px;
  color: #fff;
}
.msg {
  margin-top: 5px;
}
.msg:after {
  content: '必填，长度为4~16个字符';
  font-size: 16px;
  color: #ccc;
}
.empty .msg:after {
  content: '姓名不能为空';
  color: #E00;
}
.empty input {
  border-color: #E00;
}
.ok .msg:after {
  content: '名称格式正确';
  color: #0E0;
}
.ok input {
  border-color: #0E0;
}
.error .msg:after {
  content: '名称格式错误';
  color: #EA0;
}
.error input {
  border-color: #EA0;
}