#projects {
  position: relative;
}

#projects .contentBx {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  grid-gap: 20px;
  margin-top: 20px;
}

#projects .contentBx .postColumn {
  position: relative;
}

#projects .contentBx .postColumn .postBox {
  position: relative;
  width: 100%;
  height: 400px;
  margin-top: 20px;
}

#projects .contentBx .postColumn .postBox .textBx {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  padding: 20px;
  display: flex;
  justify-content: flex-end;
  align-items: flex-start;
  flex-direction: column;
  transition: .25s;
  opacity: 0;
  visibility: hidden;
}

#projects .contentBx .postColumn .postBox:hover .textBx {
  opacity: 0.8;
  visibility: visible;
}

#projects .contentBx .postColumn .postBox .textBx h3 {
  font-weight: 400;
  font-size: 1em;
  letter-spacing: 1px;
  color: #fff;
}

#projects .contentBx .postColumn .postBox .textBx .btn{
  position: relative;
  display: block;
  padding: 10px 30px;
  border: 2px solid #00aeff;
  text-transform: uppercase;
  font-size: 18px;
  letter-spacing: 4px;
  color: #00aeff;
  text-decoration: none;
  background: #fff;
  overflow: hidden;
}

#projects .contentBx .postColumn .postBox .textBx .btn span {
  position: relative;
  z-index: 1;
  transition: 1s;
}

#projects .contentBx .postColumn .postBox .textBx .btn .wave {
  position: absolute;
  top: calc(100% + 22px);
  left: 0;
  width: 100%;
  height: 100%;
  background: #00aeff;
  transition: 1s;
}

#projects .contentBx .postColumn .postBox .textBx .btn:hover .wave {
  top: 0;
}

#projects .contentBx .postColumn .postBox .textBx .btn:hover span {
  color: #fff;
}

#projects .contentBx .postColumn .postBox .textBx .btn .wave::before {
  content: "";
  position: absolute;
  top: -22px;
  left: 0;
  width: 100%;
  height: 22px;
  background: url(../img/wave_small.png);
  animation: animate 0.5s linear infinite;
}

@keyframes animate {
  0% {
    background-position-x: 0;
  }
  100% {
    background-position-x: 118px;
  }
}

#projects .contentBx .postColumn .postBox .imgBx {
  width: 100%;
  height: 100%;
}

#projects .contentBx .postColumn .postBox .imgBx img {
  width: 100%;
}