Flexgap与媒体查询实现响应式按钮组

.button-group {
  display: flex;
  gap: 12px; /* 统一间距 */
  flex-wrap: wrap; /* 允许换行 */
}
<p>.button {
padding: 10px 20px;
background: #007bff;
color: white;
border: none;
border-radius: 4px;
cursor: pointer;
}</p>

<div class="button-group">
  <button class="button">选项一</button>
  <button class="button">选项二</button>
  <button class="button">选项三</button>
  <button class="button">选项四</button>
</div>

@media (max-width: 768px) {
  .button-group {
    gap: 8px; /* 缩小间距 */
    flex-direction: column; /* 垂直堆叠 */
  }
<p>.button {
width: 100%; /<em> 撑满容器宽度 </em>/
}
}</p><p>@media (max-width: 480px) {
.button-group {
gap: 6px; /<em> 更窄设备进一步缩小 </em>/
}
}</p>

@supports not (gap: 12px) {
  .button-group {
    > * {
      margin-right: 12px;
      margin-bottom: 12px;
    }
    > :last-child {
      margin-right: 0;
    }
  }
}