#myContainer {
  left: 350px;
  top: -100px;
  width: 500px;
  height: 500px;
  position: relative;
  background: url("http://decorationsblog.com/wp-content/uploads/2014/01/floor-tiles-that-look-like-wood-india.jpg");
  background-size: cover;
  background-size: 500px 500px;
}
#myAnimation {
  width: 50px;
  height: 50px;
  position: absolute;
  background: url("https://lucasdeman.github.io/Tom_the_cat.png");
  background-size: cover;
  background-size: 50px 50px;
}
#myAnimation2 {
  width: 50px;
  height: 50px;
  position: absolute;
  background: url("https://lucasdeman.github.io/Tom_the_cat.png");
  background-size: cover;
  background-size: 50px 50px;
  opacity: 0.0;
}
#popetje {
  width: 50px;
  height: 50px;
  position: absolute;
  background: url("https://lucasdeman.github.io/jerry%20mouse.gif");
  background-size: cover;
  background-size: 50px 50px;
  }
.knop1{
    left: 102px;
    top: -2px;
    position: relative;
    background-color: #4CAF50;
    border: none;
    padding: 10px 13px;
    margin: 4px 2px;
    font-size: 20px;
    width: 95px;
    height: 95px;
}
.knop2{
    left: -102px;
    top: 100px;
    position: relative;
    background-color: #4CAF50;
    border: none;
    padding: 10px 13px;
    margin: 4px 2px;
    font-size: 20px;
    width: 95px;
    height: 95px;
}
.knop3{
    left: -103px;
    top: 130px;
    position: relative;
    border: none;
    padding: 10px 13px;
    margin: 4px 2px;
    font-size: 20px;
    width: 95px;
    height: 95px;
}
.knop4{
    left: -105px;
    top: 99px;
    position: relative;
    background-color: #4CAF50;
    border: none;
    padding: 10px 13px;
    margin: 4px 2px;
    font-size: 20px;
    width: 95px;
    height: 95px;
}
.knop5{
    left: -310px;
    top: 200px;
    position: relative;
    background-color: #4CAF50;
    border: none;
    padding: 10px 13px;
    margin: 4px 2px;
    font-size: 20px;
    width: 95px;
    height: 95px;
}
#terugknop{
background-color: #50DB8B;
width: 111px;
height: 30px;
position: relative;
}

#terugknoptext {
text-align: center;
position: relative;
color: black;
top: 20%
}

a {
text-decoration: none;
}