style.css

@import url("https://fonts.googleapis.com/css2?family=Source+Sans+Pro:wght@200;300;400&display=swap");

body {
  background: url(./bg.jpg) no-repeat center/cover;
  height: 100vh;
  background-attachment: fixed;
  font-family: "Source Sans Pro", sans-serif;
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
}

.container {
  color: #333;
  margin: 0 auto;
  text-align: center;
}

h1 {
  font-weight: normal;
  letter-spacing: 0.125rem;
  text-transform: uppercase;
}

li {
  font-size: 1.5em;
  list-style-type: none;
  text-transform: uppercase;
}

#countdown li {
  display: inline-block;
  padding: 1em;
}

#countdown li span {
  display: block;
  font-size: 4.5rem;
}

#randomCard {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;

  flex-wrap: wraps;
  z-index: 1;
}

#randomCard .card {
  position: relative;
  width: 280px;
  height: 300px;
  margin: 30px;
  box-shadow: 20px 20px;
  box-shadow: 20px 20px 50px rgba(0, 0, 9, 0.5);
  border-radius: 15px;
  background: rgba(255, 255, 255, 0.1);
  overflow: hidden;
  display: flex;
  justify-content: center;
  border-top: 1px solid rgba(255, 255, 255, 0.5);
  border-left: 1px solid rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(5px);
}

#randomCard .card .content {
  padding: 20px;
  text-align: center;
  /*transform: translateY(100px);
  opacity: 0;
  transition: 0.5s;*/
}

#randomCard .card:hover .content {
  transform: translateY(0px);
  opacity: 1;
}

#randomCard .card .content h1 {
  font-size: 1.8em;
  color: #fff;
  font-weight: 800;
  z-index: 1;
}

#randomCard .card .content h2 {
  font-size: 1em;
  color: #fff;
  font-weight: 800;
}

#randomCard .card .content a {
  position: relative;
  display: inline-block;
  padding: 8px 20px;
  margin-top: 15px;
  background: #fff;
  color: #000;
  border-radius: 20px;
  text-decoration: none;
  font-weight: 500;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}