.dd_heading {
  text-align: center;
  font-family: roboto thin;
}

.page-content {
  display: grid;
  grid-gap: 1rem;
  padding: 1rem;
  max-width: 1024px;
  margin: 0 auto;
  font-family: var(--font-sans);
}

@media (min-width: 600px) {
  .page-content {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 800px) {
  .page-content {
    grid-template-columns: repeat(4, 1fr);
  }
}

.d_card {
  position: relative;
  display: -webkit-box;
  display: flex;
  -webkit-box-align: end;
  align-items: flex-end;
  overflow: hidden;
  padding: 1rem;
  width: 100%;
  text-align: center;
  color: whitesmoke;
  background-color: whitesmoke;
  box-shadow: 0 1px 1px rgba(0, 0, 0, 0.1), 0 2px 2px rgba(0, 0, 0, 0.1), 0 4px 4px rgba(0, 0, 0, 0.1), 0 8px 8px rgba(0, 0, 0, 0.1), 0 16px 16px rgba(0, 0, 0, 0.1);
  border-radius: 15px;
}

@media (min-width: 600px) {
  .d_card {
    height: 350px;
  }
}

.d_card:before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 110%;
  background-size: cover;
  background-position: 0 0;
  -webkit-transition: -webkit-transform calc(var(--d) * 1.5) var(--e);
  transition: -webkit-transform calc(var(--d) * 1.5) var(--e);
  transition: transform calc(var(--d) * 1.5) var(--e);
  transition: transform calc(var(--d) * 1.5) var(--e), -webkit-transform calc(var(--d) * 1.5) var(--e);
  pointer-events: none;
}

.d_card:after {
  content: "";
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 200%;
  pointer-events: none;
  background-image: -webkit-gradient( linear, left top, left bottom, from(rgba(0, 0, 0, 0)), color-stop(11.7%, rgba(0, 0, 0, 0.009)), color-stop(22.1%, rgba(0, 0, 0, 0.034)), color-stop(31.2%, rgba(0, 0, 0, 0.072)), color-stop(39.4%, rgba(0, 0, 0, 0.123)), color-stop(46.6%, rgba(0, 0, 0, 0.182)), color-stop(53.1%, rgba(0, 0, 0, 0.249)), color-stop(58.9%, rgba(0, 0, 0, 0.32)), color-stop(64.3%, rgba(0, 0, 0, 0.394)), color-stop(69.3%, rgba(0, 0, 0, 0.468)), color-stop(74.1%, rgba(0, 0, 0, 0.54)), color-stop(78.8%, rgba(0, 0, 0, 0.607)), color-stop(83.6%, rgba(0, 0, 0, 0.668)), color-stop(88.7%, rgba(0, 0, 0, 0.721)), color-stop(94.1%, rgba(0, 0, 0, 0.762)), to(rgba(0, 0, 0, 0.79)) );
  background-image: linear-gradient( to bottom, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 0.009) 11.7%, rgba(0, 0, 0, 0.034) 22.1%, rgba(0, 0, 0, 0.072) 31.2%, rgba(0, 0, 0, 0.123) 39.4%, rgba(0, 0, 0, 0.182) 46.6%, rgba(0, 0, 0, 0.249) 53.1%, rgba(0, 0, 0, 0.32) 58.9%, rgba(0, 0, 0, 0.394) 64.3%, rgba(0, 0, 0, 0.468) 69.3%, rgba(0, 0, 0, 0.54) 74.1%, rgba(0, 0, 0, 0.607) 78.8%, rgba(0, 0, 0, 0.668) 83.6%, rgba(0, 0, 0, 0.721) 88.7%, rgba(0, 0, 0, 0.762) 94.1%, rgba(0, 0, 0, 0.79) 100% );
  -webkit-transform: translateY(-50%);
  transform: translateY(-50%);
  -webkit-transition: -webkit-transform calc(var(--d) * 2) var(--e);
  transition: -webkit-transform calc(var(--d) * 2) var(--e);
  transition: transform calc(var(--d) * 2) var(--e);
  transition: transform calc(var(--d) * 2) var(--e), -webkit-transform calc(var(--d) * 2) var(--e);
}

.d_card:nth-child(1):before {
  background-image: url(../../assets/img//card_image/1.jpg);
  background-position: center;
}

.d_card:nth-child(2):before {
  background-image: url(../../assets/img/card_image/2.jpg);
  background-position: center;
}

.d_card:nth-child(3):before {
  background-image: url(../../assets/img/card_image/3.jpg);
  background-position: center;
}

.d_card:nth-child(4):before {
  background-image: url(../../assets/img/card_image/4.jpg);
  background-position: center;
}

.d_card:nth-child(5):before {
  background-image: url(../../assets/img/card_image/5.jpg);
  background-position: center;
}

.d_card:nth-child(6):before {
  background-image: url(card_image/6.jpg);
  background-position: center;
}

.d_card:nth-child(7):before {
  background-image: url(card_image/7.jpg);
  background-position: center;
}

.d_card:nth-child(8):before {
  background-image: url(card_image/8.jpg);
  background-position: center;
}

.content {
  position: relative;
  display: -webkit-box;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
  flex-direction: column;
  -webkit-box-align: center;
  align-items: center;
  width: 100%;
  padding: 1rem;
  -webkit-transition: -webkit-transform var(--d) var(--e);
  transition: -webkit-transform var(--d) var(--e);
  transition: transform var(--d) var(--e);
  transition: transform var(--d) var(--e), -webkit-transform var(--d) var(--e);
  z-index: 1;
}

.content > * + * {
  margin-top: 1rem;
}

.heading {
  font-size: 1.3rem;
  font-weight: bold;
  line-height: 1.2;
  text-shadow: 3px 3px 6px black;
}

.data-content {
  font-family: var(--font-serif);
  font-size: 0.9rem;
  font-style: italic;
  line-height: 1.35;
}

@media (hover: hover) and (min-width: 600px) {
  .d_card:after {
    -webkit-transform: translateY(0);
    transform: translateY(0);
  }
}

@media (hover: hover) and (min-width: 600px) {
  .content {
    -webkit-transform: translateY(calc(100% - 4.5rem));
    transform: translateY(calc(100% - 4.5rem));
  }
}

@media (hover: hover) and (min-width: 600px) {
  .content > *:not(.heading) {
    opacity: 0;
    -webkit-transform: translateY(1rem);
    transform: translateY(1rem);
    -webkit-transition: opacity var(--d) var(--e), -webkit-transform var(--d) var(--e);
    transition: opacity var(--d) var(--e), -webkit-transform var(--d) var(--e);
    transition: transform var(--d) var(--e), opacity var(--d) var(--e);
    transition: transform var(--d) var(--e), opacity var(--d) var(--e), -webkit-transform var(--d) var(--e);
  }
}

@media (hover: hover) and (min-width: 600px) {
  .d_card:hover, .d_card:focus-within {
    -webkit-box-align: center;
    align-items: center;
  }
}

@media (hover: hover) and (min-width: 600px) {
  .d_card:hover:before, .d_card:focus-within:before {
    -webkit-transform: translateY(-4%);
    transform: translateY(-4%);
  }
}

@media (hover: hover) and (min-width: 600px) {
  .d_card:hover:after, .d_card:focus-within:after {
    -webkit-transform: translateY(-50%);
    transform: translateY(-50%);
  }
}

@media (hover: hover) and (min-width: 600px) {
  .d_card:hover .content, .d_card:focus-within .content {
    -webkit-transform: translateY(0);
    transform: translateY(0);
  }
}

@media (hover: hover) and (min-width: 600px) {
  .d_card:hover .content > *:not(.heading), .d_card:focus-within .content > *:not(.heading) {
    opacity: 1;
    -webkit-transform: translateY(0);
    transform: translateY(0);
    -webkit-transition-delay: calc(var(--d) / 8);
    transition-delay: calc(var(--d) / 8);
  }
}

@media (hover: hover) and (min-width: 600px) {
  .d_card:focus-within:before, .d_card:focus-within:after, .d_card:focus-within .content, .d_card:focus-within .content > *:not(.heading) {
    -webkit-transition-duration: 0s;
    transition-duration: 0s;
  }
}

:root {
  --d: 700ms;
  --e: cubic-bezier(0.19, 1, 0.22, 1);
  --font-sans: "Pretendard", sans-serif;
  --font-serif: "Pretendard", serif;
}