/* 消息容器，水平居中，顶部开始 */
  .msg_container {
      position: fixed;
      top: 20px;
      left: 50%;
      transform: translateX(-50%);
      display: flex;
      flex-direction: column;
      gap: 10px;
      z-index: 9999;
      pointer-events: none;
      align-items: center;
  }

  /* 消息样式 */
  .msg_item {
      display: inline-flex;
      align-items: center;
      padding: 10px 15px;
      border-radius: 5px;
      font-size: 14px;
      color: #fff;
      border: 1px solid transparent;
      min-height: 30px;
      opacity: 0;
      transform: translateY(-20px);
      transition: all 0.3s ease;
      pointer-events: auto;
      background-color: #333;
  }

  .msg_item.show {
      opacity: 1;
      transform: translateY(0);
  }

  .msg_item .icon {
      width: 16px;
      height: 16px;
      margin-right: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
  }

  /* 类型样式 */
  .msg_item.success {
      background-color: #f0f9eb;
      color: #67c23a;
      border-color: #e1f3d8;
  }

  .msg_item.error {
      background-color: #fef0f0;
      color: #f56c6c;
      border-color: #fde2e2;
  }

  .msg_item.info {
      background-color: #f4f4f5;
      color: #909399;
      border-color: #e9e9eb;
  }

  .msg_item.warning {
      background-color: #fdf6ec;
      color: #e6a23c;
      border-color: #faecd8;
  }