.se-ps-dropdown {
  z-index: 1;
}
.se-ps-dropdown .se-dropdown-trigger-btn {
  position: relative;
  width: 50px;
}
.se-ps-dropdown .se-dropdown-trigger-btn::before {
  content: '';
  position: absolute;
  background-size: 14px 13px;
  width: 14px;
  height: 13px;
  top: 9px;
  left: 9px;
  background-image: url('https://gw.alipayobjects.com/mdn/rms_c791a4/afts/img/A*woOJSrtwDjsAAAAAAAAAAABkARQnAQ');
}