Is there a way for me to adjust column widths in bootstrap using only CSS, without being able to modify the HTML code?

Question

Is there a way for me to adjust column widths in bootstrap using only CSS, without being able to modify the HTML code?

<div class="col-12 col-md-7">column md-7</div>
<div class="col-12 col-md-1">spacer md-1</div>
<div class="col-12 col-md-4">column md-4</div>

Recently, I took on a volunteering opportunity to revamp a webpage for an upcoming conference focusing on accessibility. To my surprise, the organizers had utilized a "drag and drop" page builder that lacked the functionality to edit subpages easily. One of the crucial changes required was to adjust the width of certain columns on the page to enhance readability. Particularly, the speaker bios in the md-4 column appeared too narrow.

https://i.sstatic.net/m4ETe.png

My task involved utilizing the "Add custom CSS functionality" to manipulate the column widths effectively. However, I encountered a challenge while attempting to increase the width of the third column exclusively using CSS.

.col-12.col-md-7 { max-width:30%; }
.col-12.col-md-4 { flex-grow:5 !important; }
.col-12.col-md-4 { max-width:70% !important; }

Although these CSS adjustments successfully expanded the third column on regular screens, the layout failed to adapt on mobile devices where the 30% width proved inadequate for the first column. This issue prompted me to seek advice on optimizing the column width adjustments across all screen sizes.

css twitter-bootstrap bootstrap-4 flexbox

Answer 1

Answer №1

On a regular screen, the third column expands nicely, but on mobile, it falls apart because the 30% width is too small for the first column.

Could using media queries solve this issue? Bootstrap 4 utilizes various media queries including the ones in your CSS:

@media (min-width: 1200px) {
  .col-12.col-md-7 { max-width:30%; }
  .col-12.col-md-4 { flex-grow:5 !important; }
  .col-12.col-md-4 { max-width:70% !important; }
}

@media (min-width: 576px) {
  .col-12.col-md-7 { max-width: 60%; } /* perhaps 60% fits better */
  .col-12.col-md-4 { flex-grow:5 !important; } /* change other classes accordingly */
  .col-12.col-md-4 { max-width:70% !important; }
}

Answer 2

On a regular screen, the third column expands nicely, but on mobile, it falls apart because the 30% width is too small for the first column.

Could using media queries solve this issue? Bootstrap 4 utilizes various media queries including the ones in your CSS:

@media (min-width: 1200px) {
  .col-12.col-md-7 { max-width:30%; }
  .col-12.col-md-4 { flex-grow:5 !important; }
  .col-12.col-md-4 { max-width:70% !important; }
}

@media (min-width: 576px) {
  .col-12.col-md-7 { max-width: 60%; } /* perhaps 60% fits better */
  .col-12.col-md-4 { flex-grow:5 !important; } /* change other classes accordingly */
  .col-12.col-md-4 { max-width:70% !important; }
}

Answer 3

Answer №2

If inline css isn't your thing, you can create separate classes for each column. By doing this, you can easily target and modify individual columns with css. It may require a bit more effort, especially if you want to make changes for mobile view using @media queries. This method allows you to customize each column size according to your preferences.

Here is an example in HTML:

<div class="col-12 col-md-7 my-col1">column md-7</div>
<div class="col-12 col-md-1 my-col2">spacer md-1</div>
<div class="col-12 col-md-4 my-col3">column md-4</div>

CSS:

.my-col3 {
   // add your styles here
 }

If you prefer to handle column sizes using Bootstrap instead of css alone, delve deeper into the column properties. You can specify how much space each column should occupy in different screen sizes without the need for extra css styling. Utilize Bootstrap's responsive features to tailor the appearance for mobile and tablet devices as well. In essence, adjusting responsiveness based on column dimensions would be a more strategic approach.

Answer 4

If inline css isn't your thing, you can create separate classes for each column. By doing this, you can easily target and modify individual columns with css. It may require a bit more effort, especially if you want to make changes for mobile view using @media queries. This method allows you to customize each column size according to your preferences.

Here is an example in HTML:

<div class="col-12 col-md-7 my-col1">column md-7</div>
<div class="col-12 col-md-1 my-col2">spacer md-1</div>
<div class="col-12 col-md-4 my-col3">column md-4</div>

CSS:

.my-col3 {
   // add your styles here
 }

If you prefer to handle column sizes using Bootstrap instead of css alone, delve deeper into the column properties. You can specify how much space each column should occupy in different screen sizes without the need for extra css styling. Utilize Bootstrap's responsive features to tailor the appearance for mobile and tablet devices as well. In essence, adjusting responsiveness based on column dimensions would be a more strategic approach.

Answer 5

Answer №3

To create a responsive layout, enclose everything in a container-fluid. Next, assign a unique class to each column and adjust the width using CSS. Utilize the @media query to customize the layout for different screen sizes.

Answer 6

To create a responsive layout, enclose everything in a container-fluid. Next, assign a unique class to each column and adjust the width using CSS. Utilize the @media query to customize the layout for different screen sizes.

Is there a way for me to adjust column widths in bootstrap using only CSS, without being able to modify the HTML code?

Answer №1

Answer №2

Answer №3

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