Bootstrap 4 How to Overlap Two Divs that Stack Responsively - css

Question

I'm a backend guy and trying to figure out a few details for a project we have that's using Bootstrap 4.
Simply put, we want to create the layout that's executed here:
https://codepen.io/mediumandmessage/pen/xVeXop
(this example and the code below is from the original Bootstrap 3 example I found, not Bootstrap 4)
HTML:
.somesection {margin-top:50px!important;}
body {
font-size:17px;
font-family:Helvetica Neue;
}
img {max-width:100%;}
.overlay-text {
font-size:3.5vw;
float:right;
width:65%; /*important*/
bottom:21vw; /*important*/
padding: 25px;
background:#f7f7f7;
}
<div class="container somesection">
<div class="row col-xs-6">
<img src="https://images.unsplash.com/photo-1459664018906-085c36f472af?format=auto&auto=compress&dpr=1&crop=entropy&fit=crop&w=1087&h=725&q=80">
</div>
<div class="col-xs-3 col-sm-offset-4 overlay-text">
This is some text that should partially overlay.
</div>
</div>
However, that example uses Bootstrap 3 and breaks in Bootstrap 4 (the text displays horizontally below the image) and also does not stack the divs responsively.
I've tried screwing around with absolute and relative positioning, etc. it became a lot of code to execute cleanly and make responsive and I was hoping someone out there may have some insight into implementing in pure Bootstrap4...
If anyone out there can share any expertise here, I'd greatly appreciate it!

Answer 1

You could add a transform to your overlay column (you may need to cancel this with a media query for your smaller screens).
Please note in the html below, I have fixed your code to work with boostrap 4 - columns have to be inside a row (they cannot be on a row) and I don't think there is a -xs class any more
.overlay-text {
/* these two are needed - the align self makes the column not stretch the whole height of the image column and the translate moves the column over the image */
align-self: flex-start;
transform: translateX(-20%);
/* the following are for example only */
background-color: #ffffff;
padding:20px;
}
<div class="container somesection">
<div class="row">
<div class="col col-sm-6">
<img src="https://images.unsplash.com/photo-1459664018906-085c36f472af?format=auto&auto=compress&dpr=1&crop=entropy&fit=crop&w=1087&h=725&q=80" class="w-100">
</div>
<div class="col col-sm-3 col-sm-offset-4 overlay-text">
This is some text that should partially overlay.
</div>
</div>
</div>
Example bootply

Answer 2

Just add position:relative; to the .overlay-text
You can also adjust the value of bottom
.somesection {margin-top:50px!important;}
body {
font-size:17px;
font-family:Helvetica Neue;
}
img {max-width:100%;}
.overlay-text {
font-size:3.5vw;
float:right;
width:65%; /*important*/
bottom:21vw; /*important*/
padding: 25px;
background:#f7f7f7;
position:relative;
}
<div class="container somesection">
<div class="row col-xs-6">
<img src="https://images.unsplash.com/photo-1459664018906-085c36f472af?format=auto&auto=compress&dpr=1&crop=entropy&fit=crop&w=1087&h=725&q=80">
</div>
<div class="col-xs-3 col-sm-offset-4 overlay-text">
This is some text that should partially overlay.
</div>
</div>