style.css

a, a:visited, a:active {
  color: #333;
}

body {
    background-image: radial-gradient(center bottom, ellipse cover, #939393, #333);
    background-image: -o-radial-gradient(center bottom, ellipse cover, #939393, #333);
    background-image: -ms-radial-gradient(center bottom, ellipse cover, #939393, #333);
    background-image: -moz-radial-gradient(center bottom, ellipse cover, #939393, #333);
    background-image: -webkit-radial-gradient(center bottom, ellipse cover, #939393, #333);
}

.shadow {
    -webkit-filter: drop-shadow( -5px -5px 5px #000 );
            filter: drop-shadow( -5px -5px 5px #000 ); /* Same syntax as box-shadow */
}
.learn-btn{
    display: inline-block;
    padding: 12px 40px;
    border: 2px solid #8FBC8F;
    background-color: #8FBC8F;
    border-radius: 3px;
    color: #fff;
    font-size: 16px;
    font-family: "Quicksand", sans-serif;
    font-weight: 700;
    letter-spacing: 1px;
    margin-left:10px;
}


.learn-btn:hover, .learn-btn:focus {
    border-color: #548B54;
    background-color: #548B54;
    color: #fff;
    text-decoration: none;
}

#vis {
  margin-top:20px;
  width: 100%;
  height: 715px;
  clear: both;
  margin-bottom: 50px;
}

footer {
  text-align: center;
}

#view_selection {
  margin-top: 10px;
}

.years {
  font-size: 28px;
  fill: white;
  font-family: "Quicksand", sans-serif;
}

.tooltip {
  position: absolute;
  top: 100px;
  left: 100px;
  text-align:left;
  font-family: "Quicksand", sans-serif;

  -moz-box-shadow: 4px 4px 12px rgba(0,0,0,.5);
  -webkit-box-shadow: 4px 4px 12px rgba(0,0,0,.5);
  box-shadow: 4px 4px 12px rgba(0,0,0,.5);

  -moz-border-radius:5px;
  background: #fff;
  opacity: .9;
  width: 300px;
  border-radius: 5px;
  font-size: 14px;
  z-index: 10;
  padding-left:10px;
  padding-top:10px;
  padding-bottom:10px;
}

.tooltip .title {
	font-size: 13px;
}

.tooltip .name {
  font-weight:bold;
}