* {
  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%;
  background: #1c18de;
background: linear-gradient(0deg, rgba(28, 24, 222, 1) 0%, rgba(9, 9, 121, 1) 0%, rgba(145, 235, 255, 1) 50%);}

.sun {
  position: absolute;
  top: 60px;
  right: 80px;
  width: 80px;
  height: 80px;
  background-color: hsl(50, 100%, 70%);
  border-radius: 50%;
  box-shadow: 0px 2px 39px 22px hsl(29, 73%, 46%);
}

.hills {
  position: absolute;
  bottom: 30%;
  left: -10%;
  width: 120%;
  height: 45%;
  background: radial-gradient(
    ellipse 120% 60% at 50% 100%,
     rgb(11, 82, 22),rgb(16, 206, 48)
  );
  border-radius: 50% 50% 0 0;
}

.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 */
}