.vertical-menu {
    background-color: #342502;
	opacity:0.75;
    width: 186px; /* Set a width if you like */
	height:491px;
}

.vertical-menu a {
     /* Grey background color */
	font: 14px Tahoma;
    color: white; /* Black text color */
    display: block; /* Make the links appear below each other */
    padding: 20px; /* Add some padding */
    text-decoration: none; /* Remove underline from links */
}

.vertical-menu a:hover {
    background-color: #150e04; /* Dark grey background on mouse-over */
}