Edit in JSFiddle

<div class="parent-wrapper">
  <div class="hexagon box box-1">
    <a href="#">box-1</a>
  </div>
  <div class="hexagon box box-2">
    <a href="#">box-2</a>
  </div>
  <div class="hexagon box box-3">
    <a href="#">box-3</a>
  </div>
  <div class="hexagon box box-4">
    <a href="#">box-4</a>
  </div>
  <div class="hexagon box box-5">
    <a href="#">box-5</a>
  </div>
  <div class="hexagon box box-6">
    <a href="#">box-6</a>
  </div>
</div>

.parent-wrapper {
  position: relative;
  width: 800px;
  display: block;
}

.box {
  posaition: absolute;
  cursor: pointer;
  &:hover {
    background-color: #ff0;
    &:before {
      border-bottom: 86.60px solid #ff0;
    }
    &:after {
      border-top: 86.60px solid #ff0;
    }
    a {
      color: #000;
    }
  }
  a {
    position: absolute;
    left: 0;
    right: 0;
    text-align: center;
    top: 50%;
    transform: translateY(-50%);
    color: #fff;
    display: block;
  }
  &.box-1 {
    left: 50%;
    top: 0;
  }
  &.box-2 {
    left: 240px;
	  top: 10px;
  }
  &.box-3 {
    left: 69%;
    right: 0;
    top: -160px;
    transform: translateY(-50%);
  }
  &.box-4 {
    left: 49.4%;
	  top: -241px;
  }
  &.box-5 {
    	top: -500px;
	    left: 88px;
  }
  &.box-6 {
    top: -760px;
	  right: -704px;
  }
}

.hexagon {
  position: relative;
  width: 300px;
  height: 173.21px;
  background-color: #64C7CC;
  margin: 86.60px 0;
}

.hexagon:before,
.hexagon:after {
  content: "";
  position: absolute;
  width: 0;
  border-left: 150px solid transparent;
  border-right: 150px solid transparent;
}

.hexagon:before {
  bottom: 100%;
  border-bottom: 86.60px solid #64C7CC;
}

.hexagon:after {
  top: 100%;
  width: 0;
  border-top: 86.60px solid #64C7CC;
}