body {
    background-color: #000;
}
#landing-header {
    z-index: 1;
    position: relative;
    text-align: center;
    padding-top: 40vh;
}
#landing-header h1 {
    color: #fff;
}
.slideshow {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: 0;
    list-style: none;
    margin: 0;
    padding: 0;
}
.slideshow li {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    background-size: cover;
    background-position: 50% 50%;
    background-repeat: no-repeat;
    opacity: 0;
    z-index: 0;
    animation: imageAnimation 50s linear infinite;
}
.slideshow li:nth-child(1) {
	background-image: url(https://cdn.theatlantic.com/assets/media/img/photo/2014/06/global-coal-usage-reaches-44-year-high/c10_RTR3D8ZX/main_1200.jpg?1420498060);  /* https://kopalniaguido.pl/images/images/inne_promo/Poziom_355/m_LOL_3881.jpg */
}
.slideshow li:nth-child(2) {
	background-image: url(../images/7857635934.png);
	animation-delay: 10s;
}
.slideshow li:nth-child(3) {
	background-image: url(../images/3516695807.png);
	animation-delay: 20s;
}
.slideshow li:nth-child(4) {
	background-image: url(../images/8867581203.png); /* http://specials-images.forbesimg.com/imageserve/517515103/960x0.jpg */
	animation-delay: 30s;
}
.slideshow li:nth-child(5) {
	background-image: url(../images/9333525319.png);
	animation-delay: 40s;
}

@keyframes imageAnimation { 
  0% { 
    opacity: 0; 
    animation-timing-function: ease-in;
  }
  10% {
    opacity: 1;
    animation-timing-function: ease-out;
  }
  20% {
    opacity: 1
  }
  30% {
    opacity: 0
  }
}

/* Older browser support - class added by modernizr */
.no-cssanimations .slideshow li {
	opacity: 1;
}


/*
.slideshow li:nth-child(1) {
	background-image: url(../images/8845571564.png);  https://kopalniaguido.pl/images/images/inne_promo/Poziom_355/m_LOL_3881.jpg 
}
.slideshow li:nth-child(2) {
	background-image: url(../images/7857635934.png);
	animation-delay: 10s;
}
.slideshow li:nth-child(3) {
	background-image: url(../images/3516695807.png);
	animation-delay: 20s;
}
.slideshow li:nth-child(4) {
	background-image: url(../images/8867581203.png);  http://specials-images.forbesimg.com/imageserve/517515103/960x0.jpg 
	animation-delay: 30s;
}
.slideshow li:nth-child(5) {
	background-image: url(../images/9333525319.png);
	animation-delay: 40s;
}

*/