How add spaces between Slick carousel item

Question

I want to add space between two slick carousel items, but not want the space with padding, because it's reducing my element size(and I don't want that).

    $('.single-item').slick({
        initialSlide: 3,
        infinite: false
    });

.slick-slider {
    margin:0 -15px;
}
.slick-slide {
    padding:10px;
    background-color:red;
    text-align:center;
    margin-right:15px;
    margin-left:15px;
}

<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css" rel="stylesheet"/>
<script src="http://cdn.jsdelivr.net/jquery.slick/1.5.0/slick.min.js"></script>
<link href="http://cdn.jsdelivr.net/jquery.slick/1.5.0/slick.css" rel="stylesheet"/>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<div class="container">
    <div class="row">
        <div class="col-sm-12" style="background-color:gray;">
            <div class="slider single-item" style="background:yellow">
                <div>1</div>
                <div>2</div>
                <div>3</div>
                <div>4</div>
                <div>5</div>
                <div>6</div>
            </div>
        </div>
    </div>
</div>

Somehow I am getting space from both side, I am trying to remove that.

Answer 1

Just fix css:

/* the slides */
.slick-slider {
    overflow: hidden;
}
/* the parent */
.slick-list {
    margin: 0 -9px;
}
/* item */  
.item{
    padding: 0 9px;
}

Answer 2

The slick-slide has inner wrapping div which you can use to create spacing between slides without breaking the design:

.slick-list {margin: 0 -5px;}
.slick-slide>div {padding: 0 5px;}

Answer 3

Since the latest versions you can simply add margin to your slided:

.slick-slide {
  margin: 0 20px;
}

There's no need for any kind of negative margin's, since slick's calculation is based on the elements outterHeight.

Answer 4

With the help of pseudo classes removed margins from first and last child, and used adaptive height true in the script. Try this fiddle

One more Demo

 $('.single-item').slick({
        initialSlide: 3,
        infinite: false,
        adaptiveHeight: true
    });

Answer 5

If you want a bigger space between the slides + not to decrease the slide's width, it means you'll have to show less slides. In such case just add a setting to show less slides

    $('.single-item').slick({
      initialSlide: 3,
      infinite: false,
      slidesToShow: 3
    });

Another option is to define a slide's width by css without setting to amount of slides to show.