styles.css

main {
	display: flex;
	justify-content: center;
}

.slider {
	position: relative;
	margin: 20px 0;
}

.slider__images {
	position: relative;
	width: 500px;
	height: 250px;
}

.slider__images-title {
	position: absolute;
	left: 0;
	bottom: 0;
	width: 100%;
	background: rgba(0, 0, 0, 0.5);
	color: #fff;
	text-align: center;
	z-index: 1;
	padding: 7px 0;
}

.slider__images .image {
	background-size: cover;
	background-position: center center;
	width: 100%;
	height: 100%;
	position: absolute;
	left: 0;
	top: 0;
	opacity: 0;
	transition: opacity 800ms ease;
}

.slider__images .image.active {
	opacity: 1;
}

.slider__arrows {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	color: #fff;
}

.slider__arrow {
	position: absolute;
	width: 15%;
	height: 100%;
	font-size: 20px;
	text-align: center;
	cursor: pointer;
	opacity: 0;
	background: rgba(0, 0, 0, 0.4);
	transition: opacity 0.4s ease;
	display: flex;
	align-items: center;
	justify-content: center;
}

.slider__arrow:hover {
	opacity: 1;
}

.slider__arrow.left {
	left: 0;
}

.slider__arrow.right {
	right: 0;
}

.slider__dots {
	display: flex;
	justify-content: center;
	position: absolute;
	left: 0;
	bottom: -20px;
	width: 100%;
}

.slider__dots-item {
	width: 10px;
	height: 10px;
	background: #ccc;
	border-radius: 50%;
	margin: 0 5px;
	cursor: pointer;
	transition: background 0.4s ease;
}

.slider__dots-item:hover,
.slider__dots-item.active {
	background: #000;
}