body {

   
}

.avaleht {
  
  display: table;
  height: 100px;
  width: 100%;
  text-align: center;
  margin-top: 50px;
}

span {
  display: table-cell;
  vertical-align: middle;
}

ul {
  list-style-type: none;
}

a {
  text-decoration: none;
  font-size: 68px;
  color: black;
  font-family: 'Nimbus_B', sans-serif;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -2px;
  line-height: 78px;
}

a:hover {
    position: relative;
    color: white;
  
     -webkit-text-stroke-width: 1.5px;
   -webkit-text-stroke-color: black;
}

a#AVATUD:hover:after {
    content: url(avatud-uste-kampaania/img/avatud-mock-3.png); /* no need for qoutes */
    transition: all 0.3s ease;
}

a#RUUM:hover:after {
    content: url(https://www.upload.ee/image/6890643/hgLKvHE.jpg); 
}

a#ANDRO:hover:after {
    content: url(../thumb/andro-thumb.jpg); 
}

a#AY:hover:after {
    content: url(https://www.upload.ee/image/6890650/esj6kphagqpy.jpg); 
}

a:hover:after {
      display: block;
    position: absolute;
    left: -200px;
    z-index: -999;
      ; /* change this value to one that suits you */
    top: -156px; /* change this value to one that suits you */
}