body {
      margin: 0;
      padding: 0;
      font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
      color: #555;
    }
    	.sidenav {
	height:100%;
	width:75px;
	position: fixed;
	z-index:1;
	top:0;
	left:0;
	background-color:#131;
	overflow-x: :hidden;
	padding-top:40px;
	}    

		.sidenav a {
	padding:4px 6px 4px 12px;
	text-decoration: none;
	font-size:15px;
	color: #618181;
	display:block;
	}  	

		.sidenav a:hover{
	color:#f1f1f1;
	}     

		.main{
	margin-left:85px;
	padding: 0px 5px;
	}

        .bk-root .bk-tab {
        background-color: grey;
        width: 200px;
        color: black;
        font-style: italic;
    }

    .bk-root .bk-tabs-header .bk-tab.bk-active{
    background-color: green;
    color: black;
    font-style: normal;
    font-weight: bold;
    }

    .bk-root .bk-tabs-header .bk-tab:hover{
    background-color: grey
    }

    .table1 {
        left:0;
        text-align: left;
        width:600px;-
        margin:0;
        font-size:12px;
        border:1px solid #000;
        border-collapse:collapse; }
    /*
     * Formatting the header area
     */
    header {
      background-color: #131;
      height: 35px;
      width: 100%;
      opacity: .9;
      margin-bottom: 10px;
    }
    header h1.logo {
      margin: 0;
      font-size: 1.5em;
      color: #fff;
      text-transform: uppercase;
      float: left;
    }
    header h1.logo:hover {
      color: #fff;
      text-decoration: none;
    }
    /*
     * Centering the body content
     */
    .st container {
      width: 740px;
      margin: 10 auto;
    }
    div.home {
      padding: 10px 0 30px 0;
      background-color: #E6E6FA;
      -webkit-border-radius: 6px;
         -moz-border-radius: 6px;
              border-radius: 6px;
    }
    div.about {
      padding: 10px 0 30px 0;
      background-color: #E6E6FA;
      -webkit-border-radius: 6px;
         -moz-border-radius: 6px;
              border-radius: 6px;
    }
    h2 {
      font-size: 1.2em;
      margin-top: 5px;
      text-align: left;
      letter-spacing: -1px;
    }
    h3 {
      font-size: 0.6em;
      margin-top: 5px;
      text-align: left;
      letter-spacing: 0px;
    }
    .menu {
      float: right;
      margin-top: 8px;
    }
    .row {
      display: inline;
    }
    .st {
      margin-left: 15px;
    }
    .s1 {
      color: #444;
      text-decoration: none;
	}
	.iframe-container {
	overflow: hidden;
	// Calculated from the aspect ration of the content (in case of 16:9 it is 9/16= 0.5625)
	padding-top: 56.25%;
	position: relative;
	}
 
	.iframe-container iframe {
	border: 0;
	height: 100%;
	left: 0;
	position: absolute;
	top: 0;
	width: 100%;
}