.w-expand {
  border: 1px solid #b1b4b6;
  border-radius: 6px;
  /* font-family: Arial, sans-serif; */
  max-width: 550px;
  overflow: hidden;
  margin-bottom: 8px;
}
.w-expand-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #f3f2f1;
  cursor: pointer;
  padding: 12px 16px;
  font-size: 16px;
}
.w-expand-header:hover { background: #e0dfde; }
.w-expand-icon {
  font-weight: bold;
  color: #1d70b8;
  font-size: 20px;
  width: 24px;
  text-align: center;
}
.w-expand-content {
  display: none;
  padding: 12px 16px;
  background: #fff;
  border-top: 1px solid #b1b4b6;
}