#css-slider {
	width: 1000px;
	height: 347px;
	overflow: hidden;
}

.slide-item {
	width: 1000px;
	height: 347px;
	float: left;
	position: relative;
}


.slider-wrapper {
	width: 400%;
	position: relative;
	left: 0;
	will-change: transform;
	animation: slider 20s infinite;
}

@keyframes slider {
  0% { transform: translateX(0); }
  25% { transform: translateX(-1000px); }
  50% { transform: translateX(-2000px); }
  75% { transform: translateX(-3000px); }
  100% { transform: translateX(0); }
}