$('.a').mouseenter(function() {
$(this).css("border", "0px")
$(this).css("background-color", "rgba(255, 255, 255, 1)");
$(this).css("transition", "0.3s");
});
$('.a').mouseleave(function() {
$(this).css("border", "0px")
$(this).css("background-color", "rgba(255, 255, 255, 0.5)");
$(this).css("transition", "0.3s");
});
body {
font-family: Sans-Serif;
background-color: blue;
}
.Overhead {
background-color: red;
background-image: url('cats.jpg');
}
.Title {
margin: 5px;
}
.Active {
background-color: rgba(255, 255, 255, 1);
}
.Menu {
overflow: hidden;
}
.Menu a {
transition: .5s ease;
display: block;
text-align: center;
text-decoration: none;
color: grey;
padding: 5px;
float: left;
width-max: 50px;
background-color: rgba(255, 255, 255, 0.5);
}
.Menu a:visited {
color: grey;
}
.head {
border: 0px solid black;
}
#service {
margin-left: 0.4px;
}
#contact {
margin-left: 0.35px;
}
}
#container {
background-color: rgba(255, 255, 255, 0.5);
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="Overhead">
<h1 class="Title">Title</h1>
<div class="Menu">
<div id="container">
<a class="Active" style="background-color: rgba(255,255,255,1);"><b>Home</b></a>
<a id="about" class="a"><b class="head">About</b></a>
<a id="service" class="a"><b class="head">Service</b></a>
<a id="contact" class="a"><b class="head">Contact</b></a>
</div>
</div>
</div>