Adjust div height to div parent's - html

Question

I'm designing a nav panel and I need to adjust the different option's styles to the parent div. For example, I need to adjust the background color of the options to the parent div (Paint the color in the full height of the parent div).
This is the code:
<div class="text-center text-muted"> <div class="container">
<div class="card">
<div class="card-header" style="background-color: #e9ecef;">
<div class="row mt8" id="nav_panel">
<div class="col-md-2" id="nav_panel_monday" style="background-color: rgb(0, 160, 157);">
<a id="nav_href_monday" href="#" style="color: white;">Monday</a>
</div>
<div class="col-md-2" id="nav_panel_tuesday">
<a id="nav_href_tuesday" href="#">Tuesday</a>
</div>
<div class="col-md-2" id="nav_panel_wednesday">
<a id="nav_href_wednesday" href="#">Wednesday</a>
</div>
<div class="col-md-2" id="nav_panel_thursday">
<a id="nav_href_thursday" href="#">Thursday</a>
</div>
<div class="col-md-2" id="nav_panel_friday">
<a id="nav_href_friday" href="#">Friday</a>
</div>
</div>
</div>
<div class="card-body">
<div id="div_hidden_monday"></div>
<div id="div_hidden_tuesday" style="display: none;"></div>
<div id="div_hidden_wednesday" style="display: none;"></div>
<div id="div_hidden_thursday" style="display: none;"></div>
<div id="div_hidden_friday" style="display: none;"></div>
</div>
</div>
</div>
</div>
.container {
width: 100%;
padding-right: 0;
padding-left: 0;
margin-right: auto;
margin-left: auto;
}
.card {
position: relative;
display: flex;
-webkit-box-orient: vertical;
-webkit-box-direction: normal;
flex-direction: column;
min-width: 0;
word-wrap: break-word;
background-color: #FFFFFF;
background-clip: border-box;
border: 1px solid rgba(0, 0, 0, 0.125);
border-radius: 0.25rem;
}
.card-header {
padding: 0.75rem 1.25rem;
margin-bottom: 0;
border-bottom: 1px solid rgba(0, 0, 0, 0.125);
}
#nav_panel {
background-color: #e9ecef;
padding-right: 0;
padding-left: 0;
border-radius: 5px;
}
.col-md-2 {
position: relative;
width: 100%;
min-height: 1px;
padding-right: 15px;
padding-left: 15px;
}
Any suggestion? Thanks for reading!

Answer 1

I think, you need to remove padding of the .card-header and add padding to the child elements. Like this
https://jsfiddle.net/bhusalhari99/sruLkt2b/3/
hope it will works for you.

Answer 2

For the time being using padding and margin issue is fixed but You
need to re-right the nav HTML structure using nav and ul li
like here
.container {
width: 100%;
padding-right: 0;
padding-left: 0;
margin-right: auto;
margin-left: auto;
}
.card {
position: relative;
display: flex;
-webkit-box-orient: vertical;
-webkit-box-direction: normal;
flex-direction: column;
min-width: 0;
word-wrap: break-word;
background-color: #FFFFFF;
background-clip: border-box;
border: 1px solid rgba(0, 0, 0, 0.125);
border-radius: 0.25rem;
}
.card-header {
padding: 0 15px !important;
margin-bottom: 0;
background-color: rgba(0, 0, 0, .03);
border-bottom: 1px solid rgba(0, 0, 0, .125);
}
.card-header a {
display: block;
padding: 10px 0;
}
#nav_panel {
background-color: #e9ecef;
padding-right: 0;
padding-left: 0;
border-radius: 5px;
}
.col-md-2 {
position: relative;
width: 100%;
min-height: 1px;
padding-right: 15px;
padding-left: 15px;
}
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" rel="stylesheet" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js"></script>
<div class="text-center text-muted">
<div class="container">
<div class="card">
<div class="card-header" style="background-color: #e9ecef;">
<div class="row mt8" id="nav_panel">
<div class="col-md-2" id="nav_panel_monday" style="background-color: rgb(0, 160, 157);">
<a id="nav_href_monday" href="#" style="color: white;">Monday</a>
</div>
<div class="col-md-2" id="nav_panel_tuesday">
<a id="nav_href_tuesday" href="#">Tuesday</a>
</div>
<div class="col-md-2" id="nav_panel_wednesday">
<a id="nav_href_wednesday" href="#">Wednesday</a>
</div>
<div class="col-md-2" id="nav_panel_thursday">
<a id="nav_href_thursday" href="#">Thursday</a>
</div>
<div class="col-md-2" id="nav_panel_friday">
<a id="nav_href_friday" href="#">Friday</a>
</div>
</div>
</div>
<div class="card-body">
<div id="div_hidden_monday"></div>
<div id="div_hidden_tuesday" style="display: none;"></div>
<div id="div_hidden_wednesday" style="display: none;"></div>
<div id="div_hidden_thursday" style="display: none;"></div>
<div id="div_hidden_friday" style="display: none;"></div>
</div>
</div>
</div>
</div>