body, html {
    margin: 0;
    padding: 0;
    width: 100%; 
    height: 100%; 
    font-family: Verdana, Geneva, Tahoma, sans-serif;
}

body::before {
    content: "";
    position: fixed; 
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0.5; 
    z-index: -1; 
}



h1 {
    position: relative;
    text-align: center;
    margin-top: 10px;
    font-size: 50px;
    margin-bottom: 130px; 
    top:50px;
}

.link-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 40px; 
}

.tile {
    display: flex;
    align-items: center;
    justify-content: center; 
    width: 300px;
    height: 100px; 
    background-color: hsla(0, 20%, 98%, 0.712); 
    transition: background-color 0.3s, border-color 0.3s; 
    text-decoration: none; 
    color: black; 
    border: 2px solid hsl(0, 0%, 38%); 
}

.tile:hover {
    background-color: hsl(0, 7%, 91%); 
    border-color: hwb(0 51% 49%); 
}

.tile h2 {
    margin: 0; 
}

#video-link-container {
  position: absolute;
  top: 0;
  right: 3%;
  width: 10%; 
  height: auto;
  z-index: 100; 
}

#video-link-container video {
  width: 100%;
  height: auto;
}


#btn {
  height: 90vh;
  width: 10vh;
  top: 90vh;
  left:8vh;
  border: none;
  border-radius: 10px;
  color: rgb(0, 0, 0);
  font-size: 20px;
  position: absolute;
  transition: 1s;
  -webkit-tap-highlight-color: transparent;
  display: flex;
  cursor: pointer;
  padding-top: 5px;
}

#btn #circle {
  width: 5px;
  height: 5px;
  background: transparent;
  border-radius: 50%;
  position: absolute;
  top: 0;
  left: 50%;
  overflow: hidden;
  transition: 500ms;
}


@media (max-width: 600px) {
  #btn {
      height: 60vh; 
      width: 15vh; 
      top: 110vh; 
      left: 5vh; 
      font-size: 16px; 
  }
}
@media (min-width: 601px) and (max-width: 1024px) {
  #btn {
      height: 80vh; 
      width: 8vh; 
      top: 85vh; 
      left: 7vh; 
      font-size: 18px; 
  }

}