#block2 {
  position: relative;
  display: inline-block;
  width: 100%;
}
#block2 a {
  position: absolute;
}
#block2 a:nth-of-type(1) {
  left: 0%;
  top: 22%;
  width: 18%;
  height: 78%;
}
#block2 a:nth-of-type(2) {
  left: 20.5%;
  top: 22%;
  width: 18%;
  height: 78%;
}
#block2 a:nth-of-type(3) {
  left: 41%;
  top: 22%;
  width: 18%;
  height: 78%;
}
#block2 a:nth-of-type(4) {
  left: 61.5%;
  top: 22%;
  width: 18%;
  height: 78%;
}
#block2 a:nth-of-type(5) {
  left: 82%;
  top: 22%;
  width: 18%;
  height: 78%;
}
#block2 a:hover {
  background: rgba(255,255,255,.3);
}