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

html, body {
  width: 100%;
  height: 100%;
}

/* FULL-STRETCH BACKGROUND GIF */
body {
  background-color: #35404b; /*change to any color you like :) */
  background-image: url("website-bg.gif");
  background-repeat: no-repeat;
  background-position: center center;
  background-size: 100% 100%; /* STRETCH to fill entire viewport */
}

/* website logo/home button */
.logo {
  position: fixed;
  top: 10px;
  left: 10px;
  width: 60px;
  height: auto;
  z-index: 10;
  cursor: pointer;
}

/* Hub-screen GIF: centered, fixed size on desktop */
.floating-gif {
  position: fixed !important;
  top: 50% !important;
  left: 50% !important;
  transform: translate(-50%, -50%) !important;

  width: 780px !important;      /* set your desired desktop width */
  height: auto !important;      /* maintains aspect ratio */

  z-index: 9 !important;
}

/* Mobile GIF: different fixed size */
@media (max-width: 768px) {
  .floating-gif {
    width: 400px !important;     /* set your desired mobile width */
    height: auto !important;     /* maintains aspect ratio */
  }
}