如何正确定位设置菜单的开关按钮

我看了你的代码和需求，其实把开关按钮定位到合适位置（比如设置项右侧，这是这类菜单的常见布局）很容易实现，咱们只需要调整label元素的布局方式就行，具体修改步骤如下：

核心修改：用Flex布局控制label内部元素排列 #

把原来label的CSS改成下面这样，通过flex布局让文字和开关自动左右分布：

label {
  font-family: "Montserrat", sans-serif;
  font-size: 1.2rem;
  cursor: pointer;
  display: flex; /* 切换为flex布局 */
  justify-content: space-between; /* 文字靠左，开关靠右 */
  align-items: center; /* 垂直方向居中对齐 */
  margin: 1em 0; /* 调整上下间距，去掉左右的margin避免挤压 */
  padding: 0.5em; /* 可选：增加内边距，让点击区域更友好 */
}

优化开关与文字的间距 #

给开关元素i增加一点左边距，避免和文字贴得太近：

label i {
  display: inline-block;
  width: 64px;
  height: 40px;
  border-radius: 20px;
  vertical-align: middle;
  transition: 0.25s 0.09s;
  position: relative;
  background: #deeff7;
  margin-left: 1em; /* 新增：和文字拉开距离 */
}

（可选）让文字自动填充剩余空间 #

如果希望文字始终占满左侧区域，开关固定在最右侧，可以给span添加flex属性：

label span {
  color: #6A759B;
  flex: 1; /* 让文字填充剩余空间 */
  margin-right: 1em;
}

修改后的完整CSS代码 #

替换你原来的CSS中对应部分，就能得到整齐的布局：

.base { position: absolute; max-width: 30em; background-color: #fff; padding: 1.125em 1.5em; font-size: 1.25em; border-radius: 1rem; box-shadow: 0 0.125rem 0.5rem rgba(0, 0, 0, 0.3), 0 0.0625rem 0.125rem rgba(0, 0, 0, 0.2); }
.base::before { content: ""; position: absolute; width: 0; height: 0; bottom: 100%; right: 1.5em; border: 0.75rem solid transparent; border-top: none; border-bottom-color: #fff; filter: drop-shadow(0 -0.0625rem 0.0625rem rgba(0, 0, 0, 0.1)); }
html { font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Helvetica, Arial, sans-serif; line-height: 1.5; font-weight: 300; color: #192229; background: linear-gradient(135deg, #F4F2F3, #BFC6D0); }
html, body { height: 100%; display: flex; justify-content: center; align-items: center; }
body { padding: 0 2rem; }
label { font-family: "Montserrat", sans-serif; font-size: 1.2rem; cursor: pointer; display: flex; justify-content: space-between; align-items: center; margin: 1em 0; padding: 0.5em; }
label > input { display: none; }
label span { color: #6A759B; flex: 1; margin-right: 1em; }
label i { display: inline-block; width: 64px; height: 40px; border-radius: 20px; vertical-align: middle; transition: 0.25s 0.09s; position: relative; background: #deeff7; margin-left: 1em; }
label i:after { content: " "; display: block; width: 30px; height: 30px; top: 5px; left: 5px; border-radius: 50%; background: #fff; position: absolute; box-shadow: 1px 2px 4px 0 rgba(0, 0, 0, 0.4); transition: 0.15s; }
label > input:checked + i { background: #1094fb; }
label > input:checked + i + span { color: #29316b; }
label > input:checked + i:after { transform: translateX(25px); }
.filter { position: absolute; }
.burger { display: flex; flex-direction: column; filter: url(#gooeyness); padding: 30px; }
.rect { background: black; display: inline-block; height: 32px; margin-top: 40px; transition: transform 500ms; width: 200px; }
.rect:nth-child(2) { transition-delay: 100ms; }
.rect:nth-child(3) { transition-delay: 100ms; }
.burger.active .rect:nth-child(1) { transform: rotate(-45deg) translateX(-51px) translateY(50px); }
.burger.active .rect:nth-child(2) { transform: rotate(45deg); }
.burger.active .rect:nth-child(3) { transform: rotate(-45deg) translateX(51px) translateY(-50px); }
.close { position: absolute; cursor: pointer; transform: scale(0.1); z-index: 2500; }
.settings-container { display: flex; flex-direction: column; width: 500px; justify-content: center; height: 250px; align-items: center; }

这样修改后，每个设置项的开关都会整齐地排列在右侧，和文字保持合适的间距，完全符合设置菜单的常用布局~

内容的提问来源于stack exchange，提问作者Sara Ree