:root {
  --main-color: white;
}

*, *:after, *:before {
  margin: 0;
  padding: 0;
  box-sizing: inherit;
}

body {
  width: 100%;
  height: 100vh;
  background-image: url(../images/istockphoto-474185479-612x612.jpg);
  background-repeat: no-repeat;
  background-size: cover;
  background-attachment: fixed; 
}

h1 {
  margin: 0;
  padding: 0;
}

.main-container {
  font-family: "Orbitron", sans-serif;
  color: var(--main-color);
  font-weight: 400;
  text-align: center;
  border: 1px solid yellow;

  width: 80%;
  margin: 0 auto;
  padding: 10px;
  border-radius: 13px;

  background-color: #d9afd9;
  background: rgb(44,248,251);
  background: radial-gradient(circle, rgba(44,248,251,1) 0%, rgba(255,222,152,1) 70%);
  opacity: 90%;

  position: absolute;
  top: 30%;
  left: 50%;
  transform: translate(-50%, -50%)
}