自举程序中两列之间的垂直分隔符

If your code looks like this:

<div class="row">
<div class="span6">
</div>
<div class="span6">
</div>
</div>

Then I'd assume you're using additional DIVS within the "span6" DIVS for holding/styling your content? So...

<div class="row">
<div class="span6">
<div class="mycontent-left">
</div>
</div>
<div class="span6">
<div class="mycontent-right">
</div>
</div>
</div>

So you could simply add some CSS to the "mycontent-left" class to create your divider.

.mycontent-left {
border-right: 1px dashed #333;
}

Well what I did was remove the gutter between the respective spans then drawing a left border for the left span and a right border for the right span in such a way that their borders overlapped just to give a single line. This way the visible line will just be one of borders.

CSS

.leftspan
{
padding-right:20px;
border-right: 1px solid #ccc;
}


.row-fluid .rightspan {
margin-left: -0.138297872340425%;
*margin-left: -0.13191489361702%;
padding-left:20px;
border-left: 1px solid #ccc;
}


.row-fluid .rightspan:first-child {
margin-left: -0.11063829787234%;
*margin-left: -0.104255319148938%;
}

HTML

  <div class="row-fluid" >
<div class="span8 leftspan" >
</div>


<div class="span4 rightspan"  >
</div>
</div>

Try this it works for me

Use this, 100% guaranteed:-

vr {
margin-left: 20px;
margin-right: 20px;
height: 50px;
border: 0;
border-left: 1px solid #cccccc;
display: inline-block;
vertical-align: bottom;
}

To fix the ugly look of a divider being too short when the content of one column is taller, add borders to all columns. Give every other column a negative margin to compensate for position differences.

For example, my three column classes:

.border-right {
border-right: 1px solid #ddd;
}
.borders {
border-left: 1px solid #ddd;
border-right: 1px solid #ddd;
margin: -1px;
}
.border-left {
border-left: 1px solid #ddd;
}

And the HTML:

<div class="col-sm-4 border-right">First</div>
<div class="col-sm-4 borders">Second</div>
<div class="col-sm-4 border-left">Third</div>

Make sure you use #ddd if you want the same color as Bootstrap's horizontal dividers.

Well here's another option which I've been using for some time now. It works great for me since I mostly need it do visually separate 2 cols. And it's also responsive. Which means that if I have columns next to each other in medium and large screen sizes, then I would use the class col-md-border, which would hide the separator on smaller screen sizes.

css:

@media (min-width: 992px) {
.col-md-border:not(:last-child) {
border-right: 1px solid #d7d7d7;
}
.col-md-border + .col-md-border {
border-left: 1px solid #d7d7d7;
margin-left: -1px;
}
}

In scss you can generate all needed classes probably from this:

scss:

@media(min-width: $screen-md-min) {
.col-md-border {
&:not(:last-child) {
border-right: 1px solid #d7d7d7;
}


& + .col-md-border {
border-left: 1px solid #d7d7d7;
margin-left: -1px;
}
}
}

HTML:

<div class="row">
<div class="col-md-6 col-md-border"></div>
<div class="col-md-6 col-md-border"></div>
</div>

How it works:

The cols must be inside an element where there are no other cols otherwise the selectors might not work as expected.

.col-md-border:not(:last-child) matches all but the last element before .row close and adds right border to it.

.col-md-border + .col-md-border matches the second div with the same class if these two are next to each other and adds left border and -1px negative margin. Negative margin is why it doesn't matter anymore which column has greater height and the separator will be 1px the same height as the highest column.

It does also have some problems...

1. When you try to be clever/lazy and use col-XX-X class together with hidden-XX/visible-XX classes inside the same row element.
2. When you have a lot of columns and need a pixel perfect thing. Since it moves n-1 column 1px to the left.

... But on the other hand it's responsive, works great for simple html and it's easy to create these classes for all bootstrap screen sizes.

I have tested it. It works fine.

.row.vdivide [class*='col-']:not(:last-child):after {
background: #e0e0e0;
width: 1px;
content: "";
display:block;
position: absolute;
top:0;
bottom: 0;
right: 0;
min-height: 70px;
}


<div class="container">
<div class="row vdivide">
<div class="col-sm-3 text-center"><h1>One</h1></div>
<div class="col-sm-3 text-center"><h1>Two</h1></div>
<div class="col-sm-3 text-center"><h1>Three</h1></div>
<div class="col-sm-3 text-center"><h1>Four</h1></div>
</div>
</div>

Must Open in Full Page to See Borders!

Added media width clauses in the CSS so there isn't any nasty borders on the mobile-friendly side of things. Hope this helps! This will resize to the length of the longest column. Tested on .col-md-4 and .col-md-6 and my assumption is it is compatible with the rest. No guarantees though.

JSFiddle

.row {
overflow: hidden;
}


.cols {
padding-bottom: 100%;
margin-bottom: -100%;
overflow: hidden;
}


@media(min-width: 992px) {
.col-md-4:not(:first-child),
.col-md-6:not(:first-child) {
border-left: 1px solid black;
}
.col-md-4:not(:last-child),
.col-md-6:not(:last-child) {
border-right: 1px solid black;
margin-right: -1px;
}
}

<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"/>
<div class="container">
<h1>
.col-md-6
</h1>
<hr>
<div class="row text-center">
<div class="col-md-6 cols">
<p>Enter some text here</p>
</div>
<div class="col-md-6 cols">
<p>Enter some more text here</p>
<p>Enter some more text here</p>
<p>Enter some more text here</p>
<p>Enter some more text here</p>
<p>Enter some more text here</p>
<p>Enter some more text here</p>
<p>Enter some more text here</p>
<p>Enter some more text here</p>
<p>Enter some more text here</p>
<p>Enter some more text here</p>
<p>Enter some more text here</p>
<p>Enter some more text here</p>
<p>Enter some more text here</p>
</div>
</div>
<hr>
<h1>
.col-md-4
</h1>
<div class="row text-center">
<div class="col-md-4 cols">
<p>Enter some more text here</p>
<p>Enter some more text here</p>
<p>Enter some more text here</p>
<p>Enter some more text here</p>
<p>Enter some more text here</p>
<p>Enter some more text here</p>
<p>Enter some more text here</p>
<p>Enter some more text here</p>
<p>Enter some more text here</p>
<p>Enter some more text here</p>
<p>Enter some more text here</p>
<p>Enter some more text here</p>
<p>Enter some more text here</p>
<p>Enter some more text here</p>
<p>Enter some more text here</p>
<p>Enter some more text here</p>
<p>Enter some more text here</p>
<p>Enter some more text here</p>
</div>
<div class="col-md-4 cols">
<p>Enter some more text here</p>
<p>Enter some more text here</p>
<p>Enter some more text here</p>
<p>Enter some more text here</p>
</div>
<div class="cols col-md-4 cols">
<p>Enter some more text here</p>
<p>Enter some more text here</p>
<p>Enter some more text here</p>
<p>Enter some more text here</p>
<p>Enter some more text here</p>
<p>Enter some more text here</p>
<p>Enter some more text here</p>
<p>Enter some more text here</p>
<p>Enter some more text here</p>
<p>Enter some more text here</p>
<p>Enter some more text here</p>
<p>Enter some more text here</p>
<p>Enter some more text here</p>
</div>
</div>
</div>

If you are still seeking for the best solution in 2018, I found the way this works perfectly if you have at least one free pseudo element( ::after or ::before ).

You just have to add class to your row like this: <div class="row vertical-divider ">

And add this to your CSS:

.row.vertical-divider [class*='col-']:not(:last-child)::after {
background: #e0e0e0;
width: 1px;
content: "";
display:block;
position: absolute;
top:0;
bottom: 0;
right: 0;
min-height: 70px;
}

Any row with this class will now have vertical divider between all of the columns it contains...

You can see how this works in this example.

Assuming you have a column space, this is an option. Rebalance the columns depending on what you need.

<div class="col-1">
<div class="col-6 vhr">
</div>
</div>

.vhr{
border-right: 1px solid #333;
height:100%;
}

In Bootstrap 4 there is the utility class border-right which you can use.

So for example you can do:

<div class="row">
<div class="col-6 border-right"></div>
<div class="col-6"></div>
</div>

If you want a vertical divider between 2 columns, all you need is add

class="col-6 border-left"

to one of your column div-s

BUT

In the world of responsive design, you may need to make it disappear sometimes.

The solution is disappearing <hr> + disappearing <div> + margin-left: -1px;

<div class="container">
<div class="row">
<div class="col-md-7">
1 of 2
</div>
<div class="border-left d-sm-none d-md-block" style="width: 0px;"></div>
<div class="col-md-5" style="margin-left: -1px;">
<hr class="d-sm-block d-md-none">
2 of 2
</div>
</div>
</div>

https://jsfiddle.net/8z1pag7s/

tested on Bootstrap 4.1

With Bootstrap 4 you can use borders, avoiding writing other CSS.

border-left

And if you want space between content and border you can use padding. (in this example padding left 4px)

pl-4

    <link href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" rel="stylesheet"/>


<div class="row">
<div class="offset-6 border-left pl-4">First</div>
<div class="offset-6 border-left pl-4">Second</div>
</div>