.icon-menu {
position: relative;
display: inline-block;
}

.notification-counter {
position: absolute;
top: 2px;
right: 2px;
background-color: black;
color: white;
border-radius: 50%;
width: 20px;
height: 20px;
line-height: 20px;
text-align: center;
font-size: 12px;
}