* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background-color: hsl(0, 0%, 15%);
}

.postcard {
  position: relative;
  width: 600px;
  height: 400px;
  overflow: hidden;
  border-radius: 16px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

.sky {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 65%;
  /* TODO: background sky gradient */
}

.sun {
  position: absolute;
  top: 60px;
  right: 80px;
  width: 80px;
  height: 80px;
  /* TODO: sun shape and glow */
  /* TODO: sun color experiment */
}

.hills {
  position: absolute;
  bottom: 30%;
  left: -10%;
  width: 120%;
  height: 45%;
  /* TODO: hills shape */
}

.water {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 32%;
  /* TODO: water color and transparency */
}

.text-overlay {
  position: absolute;
  bottom: 40px;
  left: 0;
  width: 100%;
  text-align: center;
  font-family: Georgia, serif;
  /* TODO: text styling and shadow */
  /* TODO: text color experiment */
}