css button hide and show

<apex:page >
<style>
.dropbtn {
    background-color: ⌗4CAF51;
    color: blue;
    padding: 16px;
    font-size: 10px;
    border: none;
    cursor: pointer;
}
.dropdown {
    position: relative;
    display: inline-block;
}
.dropdown-content {
    display: none;
    position: absolute;
    right: 0;
    background-color: ⌗f9f9f0;
    min-width: 160px;
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
}
.dropdown-content a {
    color: black;
    padding: 12px 16px;
    text-decoration: none;
    display: block;
}
.dropdown-content a:hover {background-color: ⌗f1f1f1}
.dropdown:hover .dropdown-content
{
    display: block;
}
.dropdown:hover .dropbtn
{
    background-color: ⌗3e8e41;
}
</style>
<div class="dropdown" style="float:right;">
  <button class="dropbtn">Quick Access Menu</button>
  <div class="dropdown-content">
    <a href="⌗">Link 1</a>
    <a href="⌗">Link 2</a>
    <a href="⌗">Link 3</a>
  </div>
</div>
</apex:page>