img{
  border: 5px solid #000;
  padding: 5px;
  box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
  text-align: center;
  border-radius: 10%;
  opacity: 0.6;
  transition: 0.5s;

}
img:hover{
    opacity: 1;
   
}
.box {
    float: right;
    width: 300px;
    height: 2000px;
    position: fixed;
    bottom: 0;
    right: 0;
}
body {
  margin: 0;
  padding: 0;
}

h2, p {
  margin: 10px;
}

ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
  overflow: hidden;
  background-color: #333333;
}

ul li {
  float: left;
}

ul li a {
  display: block;
  color: white;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
}

ul li a:hover {
  background-color: #111111;
}