Side bar toggle button not working

I have defined a toggle button for my side bar but the sidebar does not appear when the button is pressed.
The button is defined as

<div class=“c-wrapper”>
<header class=“c-header c-header-light px-3”>
<button class=“c-header-toggler sidebar-toggler” type=“button” data-toggle=“sidebar-show” >
<span class=“c-header-toggler-icon”>
</button>

and my side bar is defined as

<div class="c-sidebar c-sidebar-light ">
<ul class=“c-sidebar-nav”>
<li class=“c-sidebar-nav-title”>Nav Title
<li class=“c-sidebar-nav-item”>

Please, could someone tell me what am I doing wrong?
Thank you very much