hexcss.css

#hexGrid {
  display: flex;
  flex-wrap: wrap;
  width: 80%;
  margin: 0 auto;
  overflow: hidden;
  list-style-type: none;
}

.hex {
  position: relative;
  visibility:hidden;
  outline:1px solid transparent; /* fix for jagged edges in FF on hover transition */
  transition: all 0.5s;
  backface-visibility: hidden;
  will-change: transform;
  transition: all 0.5s;
}
.hex::after{
  content:'';
  display:block;
  padding-bottom: 86.602%;  /* =  100 / tan(60) * 1.5 */
}
.hexIn{
  position: absolute;
  width:96%;
  padding-bottom: 110.851%; /* =  width / sin(60) */
  margin: 2%;
  overflow: hidden;
  visibility: hidden;
  outline:1px solid transparent; /* fix for jagged edges in FF on hover transition */
  -webkit-transform: rotate3d(0,0,1,-60deg) skewY(30deg);
      -ms-transform: rotate3d(0,0,1,-60deg) skewY(30deg);
          transform: rotate3d(0,0,1,-60deg) skewY(30deg);
    transition: all 0.5s;
}
.hexIn * {
  position: absolute;
  visibility: visible;
  outline:1px solid transparent; /* fix for jagged edges in FF on hover transition */
}
.hexLink {
  display:block;
  width: 100%;
  height: 100%;
  text-align: center;
  color: #fff;
  overflow: hidden;
  -webkit-transform: skewY(-30deg) rotate3d(0,0,1,60deg);
      -ms-transform: skewY(-30deg) rotate3d(0,0,1,60deg);
          transform: skewY(-30deg) rotate3d(0,0,1,60deg);
}




/*** HEX CONTENT **********************************************************************/
.hex img {
  left: -100%;
  right: -100%;
  width: auto;
  height: 100%;
  margin: 0 auto;
}

.hex h1, .hex p {
  width: 100%;
  padding: 5%;
  box-sizing:border-box;
  font-size: 1.2rem;
  opacity: 0;
}

#demo1 {
  color: #F5CE95;
  text-transform: capitalize;
    text-align: center;
  bottom: 50%;
  padding-top:50%;
  font-size: 1.5em;
  z-index: 1;
}
.hex h1:before, .hex h1:after {
  display: inline-block;
  margin: 0 0.5em;
  width: 0.25em;
  height: 0.03em;
  background: #ffffff;
  content: '';
  vertical-align: middle;
  transition: all 0.3s;
  text-align:center;
}

#demo2 {
  top: 50%;
  text-align: center;
  text-transform: uppercase;  
}

.img {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background-position: center center;
  background-size: cover;
  overflow: hidden;
  -webkit-clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
}

.img:before, .img:after {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  content: '';
  opacity: 0;
  transition: opacity 0.5s;
}
.img:before {
  background: rgba(255, 255, 255, 0.3)
}
.img:after {
  background: linear-gradient(to top, transparent, rgba(255, 255, 255, 0.3), transparent);
}

/*** HOVER EFFECT  **********************************************************************/

.hexLink:hover h1, .hexLink:focus h1,
.hexLink:hover p, .hexLink:focus p{
  opacity:1;
  transition: 0.8s;
}


.hexIn:hover .img:before,
.hexIn:hover .img:after,
.hexIn:hover .hexLink {
  opacity: 1;
}

/*** HEXAGON SIZING AND EVEN ROW INDENTATION *****************************************************************/
@media (min-width:1201px) { /* <- 5-4  hexagons per row */
  #hexGrid{
    padding-bottom: 4.4%
  }
  .hex {
    width: 20%; /* = 100 / 5 */
  }
  .hex:nth-child(9n+6){ /* first hexagon of even rows */
    margin-left:10%;  /* = width of .hex / 2  to indent even rows */
  }
}

@media (max-width: 1200px) and (min-width:901px) { /* <- 4-3  hexagons per row */
  #hexGrid{
    padding-bottom: 5.5%;
    font-size: 13px;
  }
  .hex {
    width: 25%; /* = 100 / 4 */
  }
  .hex:nth-child(7n+5){ /* first hexagon of even rows */
    margin-left:12.5%;  /* = width of .hex / 2  to indent even rows */
  }
}

@media (max-width: 900px) and (min-width:601px) { /* <- 3-2  hexagons per row */
  #hexGrid{
    padding-bottom: 7.4%;
    font-size: 14px;
  }
  .hex {
    width: 33.333%; /* = 100 / 3 */
  }
  .hex:nth-child(5n+4){ /* first hexagon of even rows */
    margin-left:16.666%;  /* = width of .hex / 2  to indent even rows */
  }
}

@media (max-width: 600px) { /* <- 2-1  hexagons per row */
  #hexGrid{
    padding-bottom: 11.2%;
    font-size: 12px;
  }
  .hex {
    width: 50%; /* = 100 / 3 */
  }
  .hex:nth-child(3n+3){ /* first hexagon of even rows */
    margin-left:25%;  /* = width of .hex / 2  to indent even rows */
  }
}

@media (max-width: 400px) {
  #hexGrid {
      font-size: 8px;
  }
}