body {
  background-color: rgba(0, 0, 0, 0);
  padding-top: 5vw;
}

#background_video_container {
  width: 100vw;
  height: 130vh;
  display: flex;
  align-items: center;
  position: fixed;
  top: -10vw;
  left: 0;
  z-index: -10;
}
video {
  width: 100%;
  height: 100%;
  border: none;
}

.link_box,
.btn_container {
  margin-right: auto;
  margin-left: 0;
  margin-bottom: 0;
}
.btn_container {
  display: flex;
  width: 50vw;
}
.btn_container .link_box {
  margin-right: 0.5vw;
  margin-left: 0;
}
#graduation_btn {
  margin-top: 0.5vw;
}

hr {
  margin-top: 2vw;
  margin-bottom: 2vw;
  border: none;
}

#kabk_logo,
#inside_landscape_logo {
  object-fit: initial;
  transition: 1s;
  opacity: 0;
}
#kabk_logo,
#inside_landscape_logo {
  position: absolute;
  top: 50%;
  transform: translate(0, -50%);
}
#kabk_logo {
  height: 60vh;
  width: auto;
}
#inside_landscape_logo {
  width: 50vw;
  height: auto;
}
#home_btns_container,
.landing_text {
  transition: 1s;
  opacity: 0;
}
.landing_text {
  color: rgb(255, 246, 229);
  font-size: 4vw;
  text-align: left;
  margin-top: 40vh;
  transform: translate(0,-50%);
}

@media (orientation: portrait) {
  body {
    padding-top: 13vw;
    border-top: 2px black solid;
  }

  hr {
    margin-top: 5vw;
    margin-bottom: 5vw;
  }

  .btn_container {
    flex-wrap: wrap;
    width: 70vw;
  }
  .btn_container .link_box {
    margin-right: 2vw;
    margin-bottom: 0.7vw;
    margin-top: 0.7vw;
  }

  #graduation_btn {
    margin-top: 4vw;
    margin-bottom: 1vw;
  }

  #kabk_logo,
  #inside_landscape_logo {
    width: 90vw;
    height: auto;
  }
  .landing_text {
    font-size: 12vw;
  }
}