.homework-page .user-list-wrap {
  max-width: 900px;
  margin: 40px auto;
  padding: 20px;
}
.homework-page .user-item {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  padding: 8px 12px;
  border-bottom: 1px solid #eee;
}
.homework-page .user-item label {
  margin-left: 10px;
  font-size: 16px;
}
.homework-page #select-btn {
  margin-top: 20px;
  padding: 14px 22px;
  background: #0073aa;
  color: white;
  border-radius: 6px;
  cursor: pointer;
  display: inline-block;
}