I have two columns like this:
<div class="container">
<div class="row">
<div class="col-9"></div>
<div class="col-3"></div>
</div>
</div>
I am switching the classnames via angular to be col-8 offset-2 and col-0 . col-0 is width:0;margin:0;padding:0.
I am wondering how to animate both the width, and the positions of columns.
Since Bootstrap 4 uses flexbox, CSS transition animations don't work unless you use set a numeric flex-grow or flex-shrink on the columns.
.col-8 {
flex-grow: 1;
transition: all 400ms ease;
}
.col-0 {
width: 0;
flex-shrink: 1;
transition: all 400ms ease;
}
Demo: http://www.codeply.com/go/4Un0Q8CvkQ
To animate the grid columns as they change the media query breakpoints (instead of toggle classes via jQuery), you can simply use a CSS transition on the grid columns.
.row [class*='col-'] {
transition: all 0.5s ease-in-out;
}