Wordpress How to make Slider Full-Width (Metaslider) - html

Question

When I switch off the blog part and sidebars in the terrifico theme in Wordpress I don't seem to be able to place a full width slider anywhere.
The theme looks like this in the form that I'm talking about: http://vpthemes.com/preview/Terrifico/page-full-width/
As you can see all the text is 'bounded' by a box (the black line). Is there any way in which I can make the metaslider go OUTSIDE of this box (i.e. to span the FULL width of the page)? I don't necessarily want to get rid of the box all toghether, the text can stay within it.
I have seen on the Metaslider website that some solutions for certain themes are given (here - but I am not sure how to adapt this to the theme that I'm using.
Thanks in advance!

Answer 1

Disclaimer
Before I suggest a solution, I'd like to point out that what you're asking is to break the Box flow model. I wouldn't recommend that because you're likely to run into inconsistent results across browsers.
That said, what you're trying to accomplish is possible. You could use javascript to do this and it may in fact be easier in some respects but here's a CSS solution.
1. Break out of the box model
float: left;
width: 200%;
margin-left: -50%;
text-align: center;
The float CSS property specifies that an element should be taken from the normal flow and placed along the left or right side of its container, where text and inline elements will wrap around it.
The width of the container is still relative to its parent so if you use % units to scale it up you would need to compensate for the responsiveness of the parent. Here, I'm just overcompensating.
To ensure that our element remains centered, we use a negative margin that is half of the overflow. That is, we want our box to be 100% wide, we have 100% overflow to ensure that so half the overflow is 50% (comment below if that doesn't make sense).
We use text-align to put the element we add in step 3 in the center of the viewport.
2. Allow Overflows
This is where you may well break themes. The parent elements will hide elements that float outside of them if they have the overflow: hidden property (note overflow can also be used to show scrollbars).
You will need to ensure that the parent elements have:
#post-body, .content-posts-wrap {
overflow: visible;
}
As far as I can see that affects #post-body and .content-posts-wrap
3. Add an element that will be the right size
Now we have an oversized container for our slider but we need it to be the width of the page. Inside the div or whatever it is you want to put your slider into you will need to nest another element that will be the correct width. That element will need the following css:
display: inline-block;
width: 100vw;
text-align: left;
You need display because we are back to the box model now and we want our block to obey the width rule we give to it.
We set our width using vw (viewport width) units to make this a bit easier (but they may not be supported on your target browser). There may be some ingenius way to do this without vw units but I would probably just use javascript if it's not an option for you.
Finally, since we set our text-align above, we need to reset it here.
4. Add a Clearing Div
Because you've broken out of the flow, elements aren't too sure what to do. You probably want to add another element after your parent slider that
specifies whether an element can be next to floating elements that precede it or must be moved down (cleared) below them. source
It can be as simple as a <div> element with:
clear: both

Answer 2

write your code something like this...
html like that...
<div id="parent_for_slider">
<div id="slider">
//place your slider code
</div>
</div>
Css for that
#parent_for_slider{
position:relative;
}
#slider{
position:absolute;
width:100% !important;
height:auto;
}
i am recommending to use ResponsiveSlides.js for full width slider with responsiveness