/* Main layout */
main {
  background-color: #fefae0;
  min-height: 100vh;
  min-width: 100vw;
  scroll-behavior: smooth;
}

/* Colored sections */
#first { background-color: #574214; color: #fff; }
#second { background-color: #506e2e; color: #fff; }
#third { background-color: #2f4c5f; color: #fff; }
#fourth { background-color: #251b11; color: #fff; }

/* Section styling */
section {
  min-height: 100vh;
  min-width: 100vw;
  text-align: center;
  padding: 30px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  scroll-behavior: smooth;
  position: relative;
}

/* Background image sections */
.bg-img {
  position: relative;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
}

/* Blurred background */
.blur-bg {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  filter: blur(6px);
  z-index: 1; /* behind foreground */
}

/* Foreground images */
.foreground-img {
  position: relative;  /* relative to .bg-img */
  z-index: 2;          /* above blurred background */
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  max-width: 50%;
  height: auto;
}