@-webkit-keyframes flip {
  from {
    transform: rotateX(0);
  }
  to {
    transform: rotateX(90deg);
  }
}

@keyframes flip{
  from {
    transform: rotateX(0);
  }
  to {
    transform: rotateX(90deg);
  }
}

@-webkit-keyframes flip2 {
  from {
    transform: rotateX(90deg);
  }
  to {
    transform: rotateX(0);
  }
}

@keyframes flip2{
  from {
    transform: rotateX(90deg);
  }
  to {
    transform: rotateX(0);
  }
}

.flipping {
  -moz-animation: flip .3s ease-in;
  -webkit-animation: flip .3s ease-in;
  animation: flip .3s ease-in;
}

.flipping2 {
  -moz-animation: flip2 .3s ease-out;
  -webkit-animation: flip2 .3s ease-out;
  animation: flip2 .3s ease-out;
}

/* Metroid */
#menu-item-320 a{
    background: url("images/nav_background/m1_button.png");
  --hovered: url("https://www.metroiddatabase.com/wp-content/themes/metroid-database/images/nav_background/m1_flip.gif");
  --unhovered: url("https://www.metroiddatabase.com/wp-content/themes/metroid-database/images/nav_background/m1_button.png");
}

/* Metroid 2 Return of Samus */
#menu-item-549 a{
	background: url("images/nav_background/m2ros_button.png");
  --hovered: url("https://www.metroiddatabase.com/wp-content/themes/metroid-database/images/nav_background/m2ros_flip.gif");
  --unhovered: url("https://www.metroiddatabase.com/wp-content/themes/metroid-database/images/nav_background/m2ros_button.png");
}

/* Super Metroid */
#menu-item-548 a{
	background: url("images/nav_background/sm_button.png");
  --hovered: url("https://www.metroiddatabase.com/wp-content/themes/metroid-database/images/nav_background/sm_flip.gif");
  --unhovered: url("https://www.metroiddatabase.com/wp-content/themes/metroid-database/images/nav_background/sm_button.png");
}

/* Metroid Fusion */
#menu-item-547 a{
	background: url("images/nav_background/mf_button.png");
  --hovered: url("https://www.metroiddatabase.com/wp-content/themes/metroid-database/images/nav_background/mf_flip.gif");
  --unhovered: url("https://www.metroiddatabase.com/wp-content/themes/metroid-database/images/nav_background/mf_button.png");	
}

/* Metroid Zero Mission */
#menu-item-546 a{
	background: url("images/nav_background/mzm_button.png");
  --hovered: url("https://www.metroiddatabase.com/wp-content/themes/metroid-database/images/nav_background/mzm_flip.gif");
  --unhovered: url("https://www.metroiddatabase.com/wp-content/themes/metroid-database/images/nav_background/mzm_button.png");	
}

/* Metroid Dread */
#menu-item-11592 a{
  background: url("images/nav_background/md_button.png");
  --hovered: url("https://www.metroiddatabase.com/wp-content/themes/metroid-database/images/nav_background/md_flip.gif");
  --unhovered: url("https://www.metroiddatabase.com/wp-content/themes/metroid-database/images/nav_background/md_button.png");
}

/* Metroid Other M */
#menu-item-545 a{
	background: url("images/nav_background/mom_button.png");
  --hovered: url("https://www.metroiddatabase.com/wp-content/themes/metroid-database/images/nav_background/mom_flip.gif");
  --unhovered: url("https://www.metroiddatabase.com/wp-content/themes/metroid-database/images/nav_background/mom_button.png");	
}

/* Metroid Samus Returns*/
#menu-item-3407 a{
	background: url("images/nav_background/msr_button.png");
  --hovered: url("https://www.metroiddatabase.com/wp-content/themes/metroid-database/images/nav_background/msr_flip.gif");
  --unhovered: url("https://www.metroiddatabase.com/wp-content/themes/metroid-database/images/nav_background/msr_button.png");	
}

/* Metroid Prime */
#menu-item-553 a{
	background: url("images/nav_background/mp_button.png");
  --hovered: url("https://www.metroiddatabase.com/wp-content/themes/metroid-database/images/nav_background/mp_flip.gif");
  --unhovered: url("https://www.metroiddatabase.com/wp-content/themes/metroid-database/images/nav_background/mp_button.png");
}

/* Metroid Prime Hunters */
#menu-item-552 a{
	  background: url("images/nav_background/mph_button.png");
  --hovered: url("https://www.metroiddatabase.com/wp-content/themes/metroid-database/images/nav_background/mph_flip.gif");
  --unhovered: url("https://www.metroiddatabase.com/wp-content/themes/metroid-database/images/nav_background/mph_button.png");	
	
}

/* Metroid Prime 2 */
#menu-item-551 a{
	  background: url("images/nav_background/mp2_button.png");
  --hovered: url("https://www.metroiddatabase.com/wp-content/themes/metroid-database/images/nav_background/mp2_flip.gif");
  --unhovered: url("https://www.metroiddatabase.com/wp-content/themes/metroid-database/images/nav_background/mp2_button.png");	
}

/* Metroid Prime 3 */
#menu-item-550 a{
	  background: url("images/nav_background/mp3_button.png");
  --hovered: url("https://www.metroiddatabase.com/wp-content/themes/metroid-database/images/nav_background/mp3_flip.gif");
  --unhovered: url("https://www.metroiddatabase.com/wp-content/themes/metroid-database/images/nav_background/mp3_button.png");	
}

/* Metroid Prime 4 */
#menu-item-21957 a{
	  background: url("images/nav_background/mp4_button.png");
  --hovered: url("https://www.metroiddatabase.com/wp-content/themes/metroid-database/images/nav_background/mp4_flip.gif");
  --unhovered: url("https://www.metroiddatabase.com/wp-content/themes/metroid-database/images/nav_background/mp4_button.png");	
}

/* Metroid Prime Pinball */
#menu-item-559 a{
	  background: url("images/nav_background/mpp_button.png");
  --hovered: url("https://www.metroiddatabase.com/wp-content/themes/metroid-database/images/nav_background/mpp_flip.gif");
  --unhovered: url("https://www.metroiddatabase.com/wp-content/themes/metroid-database/images/nav_background/mpp_button.png");	
}

/* Metroid Prime Federation Force */
#menu-item-558 a{
	  background: url("images/nav_background/mpff_button.png");
  --hovered: url("https://www.metroiddatabase.com/wp-content/themes/metroid-database/images/nav_background/mpff_flip.gif");
  --unhovered: url("https://www.metroiddatabase.com/wp-content/themes/metroid-database/images/nav_background/mpff_button.png");	
}

/* Super Smash Bros. */
#menu-item-557 a{
	background: url("images/nav_background/ssb_button.png");
  --hovered: url("https://www.metroiddatabase.com/wp-content/themes/metroid-database/images/nav_background/ssb_flip.gif");
  --unhovered: url("https://www.metroiddatabase.com/wp-content/themes/metroid-database/images/nav_background/ssb_button.png");	
}

/* Super Smash Bros. Melee */
#menu-item-556 a{
	background: url("images/nav_background/ssbm_button.png");
  --hovered: url("https://www.metroiddatabase.com/wp-content/themes/metroid-database/images/nav_background/ssbm_flip.gif");
  --unhovered: url("https://www.metroiddatabase.com/wp-content/themes/metroid-database/images/nav_background/ssbm_button.png");	
}

/* Super Smash Bros. Brawl */
#menu-item-555 a{
	background: url("images/nav_background/ssbb_button.png");
  --hovered: url("https://www.metroiddatabase.com/wp-content/themes/metroid-database/images/nav_background/ssbb_flip.gif");
  --unhovered: url("https://www.metroiddatabase.com/wp-content/themes/metroid-database/images/nav_background/ssbb_button.png");	
}

/* Super Smash Bros. 3DS Wii U */
#menu-item-554 a{
	background: url("images/nav_background/ssb3dswiiu_button.png");
  --hovered: url("https://www.metroiddatabase.com/wp-content/themes/metroid-database/images/nav_background/ssb3dswiiu_flip.gif");
  --unhovered: url("https://www.metroiddatabase.com/wp-content/themes/metroid-database/images/nav_background/ssb3dswiiu_button.png");	
}