.topnav {
    background-color: #333;
    overflow: hidden;
}

.topnav a {
    float: left;
    color: #f2f2f2;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
    font-size: 17px;
}

.topnav a:hover {
    background-color: #ddd;
    color: black;
}

.topnav a.active {
    background-color: #6a79ed;
    color: white;
}

body{
	background-color:#3a9959;
}

div.tab {
    float: left;
    border: 1px solid #ccc;
    background-color: #f1f1f1;
    width: 30%;
    height: 300px;
}

div.tab button {
    display: block;
    background-color: inherit;
    color: black;
    padding: 22px 16px;
    width: 100%;
    border: none;
    outline: none;
    text-align: left;
    cursor: pointer;
    transition: 0.3s;
}

div.tab button:hover {
    background-color: #ddd;
}

div.tab button.active {
    background-color: #ccc;
}

.tabcontent {
    float: right;
    width: 69%;
    height: 350px;
	text-align: center;
	color:white;
	background-color:black;
}