style.css

body {
	text-align: center;
}

.main {
	max-width: 700px;
	margin: 0 auto 2rem;
	display: flex;
	flex-flow: row wrap;
	justify-content: space-between;
	align-items: flex-start;
}

.video {
	position: relative;
	width: 100%;
	height: auto;
}

.video_thumb {
	margin: 0;
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 0;
	padding-bottom: 56.25%;
}

.overlay::before {
	content: "";
	background-color: rgba(0, 0, 0, 0.8);
	position: fixed;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	pointer-events: none;
	z-index: 1;
}

.video_thumb img {
	position: absolute;
	top: 0;
	left: 0;
	object-fit: cover;
	width: 100%;
	height: 100%;
	z-index: 0;
}

.video_play {
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
	pointer-events: none;
	-webkit-appearance: none;
	border: none;
	background-color: transparent;
}

.video_play svg {
	width: 100px;
	height: auto;
}

.embed-container {
	position: relative;
	padding-bottom: 56.25%;
	height: 0;
	overflow: hidden;
	max-width: 100%;
	z-index: 0;
}

.embed-container.clicked {
	position: fixed;
	top: 50%;
	left: 50%;
	width: 90%;
	padding-bottom: 50.625%;
	transform: translate(-50%, -50%);
	z-index: 2;
}

.embed-container iframe,
.embed-container object,
.embed-container embed {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
}

.lines {
	display: none;
	-webkit-appearance: none;
	background: transparent;
	position: fixed;
	top: 5px;
	right: 10px;
	width: 35px;
	height: 35px;
	margin: 1rem 0;
	padding: 0;
	z-index: 2;
	border: 2px solid #fff;
	border-radius: 50%;
}

.lines.active {
	display: block;
}

.lines span {
	display: block;
	width: 35px;
	height: 3px;
	margin: 5px 0;
	background-color: #fff;
	border-radius: 50vh;
}

.lines span:nth-of-type(1) {
	transform: rotateZ(45deg) translate(2px, 3.667px);
}

.lines span:nth-of-type(2) {
	transform: rotateZ(-45deg) translate(2px, -3.667px);
}