.jumpbuttons .column a,
.jumpbuttons .column a:visited {
  text-align:center;
  display: flex;
  font-size: 20px;
  padding: 10px;
  color: #fff;
  text-decoration: none;
  background-color: rgba(255,255,255,0);
  -webkit-transition: background 500ms ease-in-out;
  -moz-transition: background 500ms ease-in-out;
  -ms-transition: background 500ms ease-in-out;
  -o-transition: background 500ms ease-in-out;
  transition: background 500ms ease-in-out;
}
.jumpbuttons .column a:hover {
  background-color: rgba(255,255,255,0.2); 
}

/* Small Devices, Tablets */
@media only screen and (min-width : 768px) {
  .jumpbuttons .column a,
  .jumpbuttons .column a:visited {
    font-size: 22px;
    display: flex;
    align-items:center;
    height: 60px;
    justify-content:center;
  }
}