.btn-container {
  display: grid;
  grid-auto-flow: column; /* 按列排列 */
  justify-content: center; /* 水平居中 */
  gap: 10px;           /* 按钮间距 */
}

.print_modal {
    display: none;
    position: fixed;
    z-index: 1;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.4);
}

.print-content {
    background-color: #fff;
    margin: 15% auto;
    padding: 20px;
    width: 25%;
    box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2);
}