body {
  margin: 0;
  font-family: Arial;
  font-size: 16px;
    
}

.center {

 display: flex;
    
  justify-content: center;

  align-items: center;

}


a:link {
  color: lightsteelblue;
  background-color: transparent;
  text-decoration: none;
}
a:visited {
  color: pink;
  background-color: transparent;
  text-decoration: none;
}
a:hover {
  color: pink;
  background-color: transparent;
  text-decoration: underline;
}
a:active {
  color: lightgrey;
  background-color: transparent;
  text-decoration: underline;
}



.videoWrapper {
position: relative;
padding-bottom: 56.25%; /* 16:9 */
height: 0;
}

.videoWrapper iframe {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
}



#navbar {
  background-color: #FFFFFF;
  position: fixed;
  top: 0;
  width: 100%;
  display:block;
  transition: top 0.3s;
}

#navbar a {
  float: left;
  display: block;
  color: lightgrey;
  text-align: center;
  padding: 15px;
  text-decoration: none;
  font-size: 20px;
}

#navbar a:hover {
 color: lightsteelblue;
}

  .container{
           max-width: 920px;
           margin: auto;
       }