body {
      background-image:url('../img/hintergrund300.png');
      font-family: "Spartan";
}


.box {
  background-color: #218D9B;
  height: 100px;
  width: 100px;
}

.container, .container-fluid, .container-lg, .container-md, .container-sm, .container-xl {
    width: 95%;
    padding-right: 15px;
    padding-left: 15px;
    margin-right: auto;
    margin-left: auto;
}

.nav-item {
font-size:1.3vw;
margin-left:0.3em;
display: block;
}

@media (max-width: 768px){
.nav-item {
  background-color: rgba(255, 182, 193, 0.9);
  margin: 1% 0px 0px 0px;
  font-size:5vw;
}



.transform {
  -webkit-transition: all 2s ease;  
  -moz-transition: all 2s ease;  
  -o-transition: all 2s ease;  
  -ms-transition: all 2s ease;  
  transition: all 2s ease;
}

.transform-active {
  background-color: #45CEE0;
  height: 200px;
  width: 200px;
}



@keyframes example {
  from {
    
    
    opacity: 0;

  }
  to {
    
    
    opacity: 1;
    
    
  }
}

.naja {

  animation-name: example;
  animation-duration: 4s;
}