Using below shortcode, you can set the width of content.
30% Width
<div class="width30">
your content here...
</div>40% Width
<div class="width40">
your content here...
</div>50% Width
<div class="width50">
your content here...
</div>60% Width
<div class="width60">
your content here...
</div>70% Width
<div class="width70">
your content here...
</div>80% Width
<div class="width80">
your content here...
</div>90% Width
<div class="width90">
your content here...
</div>Center Align the smaller width region
Add class center to center align the smaller width region.
<div class="width30 center">
your content here...
</div><div class="width50 center">
your content here...
</div><div class="width70 center">
your content here...
</div>