.active {
  display: block;
  z-index: 10;
  transform: translate(-50% -50%);
  position: fixed;
  top: 20%;
  left: 20%;
}
.hidden {
  display: none;
  z-index: 1;
}
.button {
  display: block;
}
img {
  width: 200%;
  height: auto;
}
.mybutton {
  box-shadow: 3px 4px 0px 0px #1564ad;
  background-color: #79bbff;
  border-radius: 5px;
  border: 1px solid #337bc4;
  display: inline-block;
  cursor: pointer;
  color: #ffffff;
  font-family: Arial;
  font-size: 17px;
  font-weight: bold;
  padding: 12px 44px;
  text-decoration: none;
  text-shadow: 0px 1px 0px #528ecc;
}

.mybutton:hover {
  background-color: #378de5;
}

.mybutton:active {
  position: relative;
  top: 1px;
}
body {
  background-color: rgb(165, 201, 218);
}