My dropdown menu is not showing upon hover - html

Question

I'm having trouble making a dropdown menu. My dropdown menu just won't show upon hover, but if I change my display from none to block in .submenu ul li, the dropdown is in the right place.
Can anyone please help me?
* {
padding: 0;
margin: 0;
text-decoration: none;
list-style: none;
box-sizing: border-box;
}
body {
font-family: 'montserrat';
}
.container {
height: 80px;
width: 100%;
background: #34495e;
display: block;
float: right;
}
h1.logo {
font-size: 35px;
font-weight: bold;
color: white;
padding: 0 40px;
line-height: 80px;
float: left;
width: auto;
/* border: 1px red solid; */
}
.logo span {
color: #3498db;
}
nav ul {
float: right;
margin-right: 40px;
/* border: 1px red solid; */
}
nav li {
display: inline-block;
margin: 0 5px;
line-height: 80px;
text-align: center;
/* border: 1px red solid; */
}
nav a {
color: white;
font-size: 18px;
text-transform: uppercase;
padding: 7px 10px;
border-radius: 3px;
}
a.active,
a:hover {
border: 1px solid white;
transition: .5s ease-in;
}
nav #icon {
color: white;
font-size: 30px;
line-height: 80px;
float: right;
margin-right: 40px;
cursor: pointer;
background: #34495e;
border: none;
}
#media (min-width: 980px) {
h1.logo {
font-size: 32px;
padding-left: 60px;
}
nav ul {
margin-right: 20px;
}
nav a {
font-size: 17px;
}
nav #icon {
display: none;
}
div button {
display: none;
}
}
#media(max-width:980px) {
nav #icon {
display: block;
}
nav ul {
position: fixed;
width: 100%;
height: 100vh;
background: #2f3640;
top: 80px;
left: -100%;
text-align: center;
transition: all .5s ease-in;
}
.submenu ul {
top: 100%;
}
nav li {
display: block;
margin: 50px 0;
line-height: 30px;
}
nav a {
font-size: 20px;
text-align: center;
}
a.active,
a:hover {
border: none;
color: #3498db;
}
#btn1:hover {
border: none;
color: #3498db;
}
#btn2:hover {
border: none;
color: #3498db;
}
#btn3:hover {
border: none;
color: #3498db;
}
nav ul.show {
left: 0;
}
}
body {
background-image: url('../images/workout.jpg');
background-size: cover;
height: calc(100vh-80px);
}
div .connect {
background: #2f364e;
display: inline-block;
width: auto;
height: auto;
}
#btn1 {
background: #2f364e;
padding: .5em .7em;
border: none;
font-size: 20px;
color: white;
margin: 0 5px;
}
#btn2 {
background: #2f364e;
padding: .5em .7em;
border: none;
font-size: 20px;
color: white;
margin: 0 5px;
}
#btn3 {
background: #2f364e;
color: white;
padding: .5em .7em;
border: none;
font-size: 20px;
margin: 0 5px;
}
.submenu ul li {
display: none;
background: #34495e;
border-radius: 6px;
padding: 0 2px;
text-align: center;
opacity: 0.9;
transition: .5s ease-in;
}
.submenu ul {
margin: 0;
padding: 0;
}
.submenu li a {
margin: 0;
padding: .5em;
}
.main-nav li :hover .submenu {
display: block;
}
<header>
<nav class="container">
<h1 class="logo">Fitness Fir<span>st</span></h1>
<nav class="navbar">
<div class="main-nav">
<ul>
<li><a class="active" href="#">Home</a></li>
<li>About</li>
<li>Services
<div class="submenu">
<ul>
<li>Membership</li>
<li>Coaching</li>
</ul>
</div>
</li>
<li>Timetables</li>
<li>Contact</li>
<div class="connect" class="button">
<button id="btn1"><i class="fa fa-facebook"></i></button>
<button id="btn2"><i class="fa fa-instagram"></i></button>
<button id="btn3"><i class="fa fa-twitter"></i></button>
</div>
</ul>
<button id="icon"><i class="fa fa-bars" style="font-size:36px"></i></button>
</div>
</nav>
</nav>
</header>

Answer 1

Issue
In your CSS file, you have only hidden the li elements in your submenu:
.submenu ul li {
display: none;
background: #34495e;
border-radius: 6px;
padding: 0 2px;
text-align: center;
opacity: 0.9;
transition: .5s ease-in;
}
But here, you're trying to display the .submenu class, rather than the lis inside. In addition, the :hover selector is not attached to the li
.main-nav li :hover .submenu {
display: block;
}
Fix
To fix this we can change the above selector to the below, so that it is now un-hiding the submenu's lis, when you hover over the parent li (Services button)
.main-nav li:hover .submenu li {
display: block;
}