html, body {
  background-color: #FFF;
}
#content {
  background-image: url('background.png');
  height: 100vh;
  width: 80vw;
  margin-left: 20vw;
}

.menu {
  list-style-type: none;
  margin: 0;
  padding: 0;
}
ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
  width: 200px;
  background-color: #eeeded;
  position: fixed;
  top: 0px;
  left: 0px;
  height: 100%;
  list-style-type: none;
  width: 25%;
}
li a {
  text-align: center;
  border-radius: 5px;
  display: block;
  color: rgb(49, 49, 49);
  font-size: xx-large;
  text-decoration: none;
  background-color: #d8d8d8;
  border-style: solid;
  border-color: #d8d8d8;
}
li a:hover {
  display: block;
  color: aliceblue;
  background-color: #616161;
  border-style: solid;
  animation-duration: 1.25s;
  border-color: black;
  border-style: solid;
  animation-name: borderAnimation;
  animation-iteration-count: infinite;
}
li a.active {
  background-color: rgb(48, 108, 203);
  color: aliceblue;
}
@keyframes test {
  0% {
    left: 15px;
  }
  100% {
    left: 200px;
  }
}
@keyframes borderAnimation {
  0% {
    border-color: black;
  }
  25% {
    border-color: #d8d8d8;
  }
  50% {
    border-color: black;
  }
  75% {
    border-color: #d8d8d8;
  }
  100% {
    border-color: black;
  }
}
#fluga {
  position: fixed;
  top: 50%;
  left: 50%;
}
.footer {
  position: absolute;
  bottom: 10px;
  text-align: center;
  font-size: xx-large;
  padding: 10px;
  color: black;
}