The css for the dropup menu is:
<style>
* {
outline: none;
padding: 0;
margin: 0;
}
a {
outline: none !important;
}
body {
background-color: #60a3bc;
color: #555;
font-size: 1.1em;
font-family: Arial, Helvetica, sans-serif;
outline: none;
padding: 0;
margin: 0;
}
.header{
background:#60a3bc;
text-shadow: 0px 0px 6px rgba(255, 255, 255, 1);
-webkit-box-shadow: 0px 5px 40px -10px rgba(0, 0, 0, 0.57);
-moz-box-shadow: 0px 5px 40px -10px rgba(0, 0, 0, 0.57);
width: 72px;
margin-left: 1000px;
margin-top: 30px;
}
nav ul {
-webkit-font-smoothing: antialiased;
list-style: none;
margin: 0;
padding: 0;
width: 100%;
}
nav li {
background:#60a3bc;
float: left;
margin: 0;
padding: 0;
position: relative;
position: absolute; /*Drop Up Menu */
bottom: 50px;
}
nav a {
color: #444;
display: block;
font: normal 24px/50px Arial, Helvetica, sans-serif;
padding: 0 25px;
text-align: center;
text-decoration: none;
-webkit-transition: all .25s ease;
-moz-transition: all .25s ease;
-ms-transition: all .25s ease;
-o-transition: all .25s ease;
transition: all .25s ease;
}
nav .dropdown {
background:url('../images/arrow.jpg') no-repeat right center;
}
nav li:hover a {
background: #01abf8;
color:#FFF;
}
nav li ul {
float: right;
right: 0;
width: 150%;
opacity: 0;
position: absolute;
top: 35px;
visibility: hidden;
z-index: 1;
-webkit-transition: all .25s ease;
-moz-transition: all .25s ease;
-ms-transition: all .25s ease;
-o-transition: all .25s ease;
transition: all .25s ease;
position: absolute;
bottom: 50px;
}
nav li:hover ul {
opacity: 1;
top: 50px;
visibility: visible;
}
nav li ul li {
float: none;
width: 100%;
}
nav li ul a:hover {
background: #bbb;
}
/* Clearfix */
.cf:after, .cf:before {
content: "";
display: table;
}
.cf:after {
clear: both;
}
</style>
and the HTML is:
<div class="header">
<nav>
<ul class="cf">
<li><a class="dropdown" href="#">+</a>
<ul>
<li><a href="#">1</a></li>
<li><a href="#">2</a></li>
<li><a href="#">3</a></li>
</ul>
</li>
</ul>
</nav>
</div>
I want to make the drop down look like a circle, currently it looks like,