<style>
.mainmenubtn {
background-color: skyblue;
color: white;
border: none;
cursor: pointer;
padding:20px;
margin-top:20px;
}
.mainmenubtn:hover {
background-color: blue;
}
.dropdown {
position: relative;
display: inline-block;
}
.dropdown-child {
display: none;
background-color: skyblue;
min-width: 200px;
}
.dropdown-child a {
color: blue;
padding: 20px;
text-decoration: none;
display: block;
}
.dropdown:hover .dropdown-child {
display: block;
}
</style>