.post {
  display: inline-block;
  width: 40vh;
  height: 70vh;
  position: relative;
  margin: 2.2vh .7vh;
  overflow: hidden;
  font-family: 'Lato', sans-serif;
  font-weight: 300;
  transition: 0;
  letter-spacing: .2vh;
  border: .1vh solid var(--color);
  border-radius: .8vh;
}

.post button {
  width: 101%;
  height: 100%;
  font-family: 'Lato', sans-serif;
  font-weight: 300;
  font-size: calc(.2vw + 1.5vh + 2px);
  letter-spacing: .1vh;
  font-weight: bold;
  background-size: contain;
  background-repeat: no-repeat;
  -webkit-mask: url("https://raw.githubusercontent.com/robin-dela/css-mask-animation/master/img/urban-sprite.png");
  mask: url("https://raw.githubusercontent.com/robin-dela/css-mask-animation/master/img/urban-sprite.png");
  -webkit-mask-size: 3000% 100%;
  mask-size: 3000% 100%;
  border: none;
  color: #000;
  -webkit-animation: ani2 0.7s steps(29) forwards;
  animation: ani2 0.7s steps(29) forwards;
  cursor: pointer;
}

.post button:hover {
  -webkit-animation: ani 0.7s steps(29) forwards;
  animation: ani 0.7s steps(29) forwards;
}

.post:hover {
  border: .1vh solid var(--gray);
}

.post_title {
  display: grid;
  width: 101%;
  height: 12vh;
  position: absolute;
  left: 0;
  bottom: 24.9vh;
  align-items: center;
  padding: 0 3vh;
  font-size: calc(.2vw + 1.5vh + 3px);
  text-transform: uppercase;
  color: #000;
  background-color: white;
}

.post_text {
  display: grid;
  width: 101%;
  height: 25vh;
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 2vh;
  text-align: left;
  font-size: calc(.15vw + 1.4vh + 2px);
  font-family: "Poppins";
  font-weight: normal;
  background-color: var(--background_color);
}

.post_text span {
  color: white;
  text-align: center;
  font-size: calc(.1vw + 1.3vh + 2px);
  margin-top: -1vh;
}

.post_inner_side {
  display: grid;
  width: 101%;
  height: 100%;
  position: absolute;
  place-items: center;
  overflow: hidden;
  color: white;
  font-family: 'Lato', sans-serif;
  font-weight: bold;
  font-size: calc(.2vw + 1.3vh);
  text-transform: uppercase;
}

@-webkit-keyframes ani2 {
  from {
    -webkit-mask-position: 100% 0;
    mask-position: 100% 0;
  }
  to {
    -webkit-mask-position: 0 0;
    mask-position: 0 0;
  }
}

@keyframes ani2 {
  from {
    -webkit-mask-position: 100% 0;
    mask-position: 100% 0;
  }
  to {
    -webkit-mask-position: 0 0;
    mask-position: 0 0;
  }
}

@media screen and (max-width: 100vh) {
    .button-container-1, .button-container-2, .button-container-3 {
    width: 86% !important;
  }
}