* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
  background-color: rgb(167, 236, 98);
  font-family: Arial, sans-serif;
}

#scrollbar {
  position: fixed;
  top: 0;
  left: 0;
  height: 14px;
  width: 0%;
  background: linear-gradient(90deg, #0b8, #070);
  z-index: 9999;
  transition: width 120ms linear;
}

.container {
  max-width: 400px;
  margin: 80px auto;
  text-align: center;
  padding-bottom: 200px;
}
.cards {
  background-color: yellowgreen;
  margin: 10px;
  font-size: 4rem;
  padding: 60px;
  border-radius: 10px;
  color: green;
  box-shadow: 4px 4px 20px 8px rgba(0, 0, 0, 0.1);
}