* {
  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: #833AB4;
background: linear-gradient(1deg,rgba(131, 58, 180, 1) 7%, rgba(159, 51, 145, 1) 26%, rgba(253, 29, 29, 1) 62%, rgba(252, 176, 69, 1) 100%);

}

.sun {
  position: absolute;
  top: 60px;
  right: 80px;
  width: 80px;
  height: 80px;
  border-radius: 200px 92px 200px 91px;
-webkit-border-radius: 200px 92px 200px 91px;
-moz-border-radius: 200px 92px 200px 91px;
border: 9px double #ffffff;
background-color: black;background: #000000;
background: #000000;
background: radial-gradient(circle,rgba(0, 0, 0, 1) 0%, rgba(0, 0, 0, 1) 62%, rgba(120, 120, 120, 1) 91%, rgba(252, 176, 69, 1) 99%);

  /* TODO: sun color experiment */

}

.hills {
  position: absolute;
  bottom: 30%;
  left: -10%;
  width: 120%;
  height: 45%;
  background: #55ff00;
background: radial-gradient(ellipse 120% 60% at 50% 100% rgba(85, 255, 0, 1) 0%, rgba(87, 199, 133, 1) 94%, rgba(237, 221, 83, 1) 100%);
}

.water {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 32%;
  background-color: rgb(0, 0, 0);
}

.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 */
}