如何在不修改列宽、不移动容器的前提下为自定义行结构添加1列的左侧偏移

Got it, let's solve this for you! Since you can't modify the parent container or change the col-2 width, here are two reliable approaches to shift those entire row structures left by one Bootstrap column width while keeping everything else in place:

1. Use CSS Transform (Recommended) #

This method is the cleanest because it only changes the visual position of the rows—it won't affect the page layout flow, so your other container elements stay exactly where they are.

First, add a custom CSS class to handle the shift:

/* Shift left by 1 Bootstrap column width (1/12 of the container) */
.row-shift-left-col {
  transform: translateX(calc(-100% / 12));
}

/* Optional: Only apply on lg+ screens (matches your row's d-lg-flex visibility) */
@media (min-width: 992px) {
  .row-shift-left-col {
    transform: translateX(calc(-100% / 12));
  }
}

Then apply this class to your target rows in the HTML:

<div class="container"> 
 <cfloop index="x" from="1" to="5"> 
 <!-- Add the custom class here -->
 <div class="row d-none d-lg-flex py-2 fw-bold row-shift-left-col"> 
 <cfloop index="y" from="1" to="6"> 
 <div class="col-2 px-3"> 
 <p>CONTENT</p> 
 </div> 
 </cfloop> 
 </div> 
 <hr> 
 </cfloop> 

 <!-- Your other container elements remain in their original position -->
 <div class="mt-4">
   This is other content in the container—it won't move!
 </div>
 </div>

Why this works: translateX(calc(-100% / 12)) moves the row left by exactly 1/12 of the container's width, which is the width of one standard Bootstrap column. Since transform doesn't alter the element's "space" in the layout, your other container content stays untouched.

2. Use Negative Margin (Alternative) #

If you need an approach that affects the layout (e.g., for older browser compatibility, though transform is widely supported now), you can use a negative margin:

Add this CSS class instead:

.row-shift-left-col {
  margin-left: calc(-100% / 12);
}

/* Optional: Apply only on lg+ screens */
@media (min-width: 992px) {
  .row-shift-left-col {
    margin-left: calc(-100% / 12);
  }
}

Then apply the same class to your rows as above.

Note: This method makes the row's actual width slightly wider (it extends left beyond the container). If your container has overflow: hidden, the leftmost part of the row might get clipped. Use this only if transform isn't an option for your use case.

内容的提问来源于stack exchange，提问作者user17142477