body {
  background: url(img/qbkls.png) repeat 0 0;
}

h1 {
	font-family: 'Molengo', Georgia, Times, serif;
	font-size: xxx-large;
}

p {
	font-family: 'Lekton', Helvetica, Arial sans-serif;
	font-size: xx-large;
	padding-left: 10%;
	padding-right: 10%;
	text-align: center;
}

img {
	vertical-align: middle;
}

.center {
  width: 100%;
  padding-top: 8%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

ul {
	
	list-style-type: none;
    width: auto;
    padding: 0px;
}

ul > li {
	
	font-family: 'Lekton', Helvetica, Arial sans-serif;
	border-radius: 7px 7px 7px 7px;
	font-size: medium;
	display: inline-block;
    margin: 5px;
    padding: 9px;
    background-color: white; /* old color: #317393; */
    cursor: pointer;    
    opacity: 1.0;
    transition: opacity .2s ease-in-out;
	vertical-align: middle;
}

ul > li:hover {
    opacity: 1.0;
}

ul:hover > li:not(:hover) {
    opacity: 0.5;
}

a.nav-link:link
{
   color: black;
   text-decoration: none;
}
a.nav-link:visited
{
   color: black;
   text-decoration: none;
}
a.nav-link:hover
{
   color: black;
   text-decoration: none;
}
a.nav-link:active
{
   color: black;
   text-decoration: none;
}

.tooltip {
  position: relative;
  display: inline-block;
}

.tooltip .tooltiptext {
  visibility: hidden;
  width: 140px;
  background-color: #555;
  color: #fff;
  text-align: center;
  border-radius: 6px;
  padding: 5px;
  position: absolute;
  z-index: 1;
  bottom: 150%;
  left: 50%;
  margin-left: -75px;
  opacity: 0;
  transition: opacity 0.3s;
}

.tooltip .tooltiptext::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  margin-left: -5px;
  border-width: 5px;
  border-style: solid;
  border-color: #555 transparent transparent transparent;
}

.tooltip:hover .tooltiptext {
  visibility: visible;
  opacity: 1;
}

div.hidden
{
   display: none
}