html {
	font-family: 'Open Sans', sans-serif;
	color: #000000;
	background-color: #f3f3f3;
}

body {
	margin: 0;
}

header {
}

.header_container {
	max-width: 1280px;
	width: 100%;
	margin: auto;
}

.header_container img{
	width: 100%;
}

.header_title {
	position: absolute;
	max-width: 1280px;
	width: 100%;
	text-align: center;
}

.interface_link
{
	width: 100%;
    margin-bottom: 20px;
	display: flex;
	justify-content: flex-end;
}

.interface_link a
{
    text-decoration: none;
    font-size: 12px;
	margin-right: 20px;
    padding: 8px;
    border-radius: 4px;
	background-color: white;
	color: black;
}

.interface_link a:hover
{
    background-color: #141b4d;
    color: #FFFFFF;
}

.interface_link a.current
{
    margin-right: 10px;
	background-color: #141b4d;
    color: #FFFFFF;
    pointer-events: none;
    cursor: none;
}

h1 {
	font-size: 24px;
}

main {
}

.main {
	display: flex;
	max-width: 1280px;
	margin: auto;
	padding: 20px 0;
}

.left,
.right {
	flex: 1 1 50%;
}

.player_container {
	position: relative;
	width:100%;
	height:0;
	padding-bottom:56.25%;
	min-height: 40px;
}

iframe {
	position:absolute;
	top:0;
	left:0;
	width:100%;
	height:100%;
	border:0;
}

.duration-container {
	display: flex;
    flex-direction: row;
    justify-content: left;
    align-items: center;
	border-bottom: 2px solid #b2b2c0;
}

.duration-container .logo {
    height: 26px;
    width: 26px;
    display: inline-block;
}

.duration-text {
    padding: 10px 10px 10px 0;
	font-weight: 900;
}

.hour-start {
	color: #b2b2c0;
    font-family: Lato,sans-serif;
    font-size: 14px;
    font-weight: 900;
    line-height: 1.29;
}

.description {
	line-height: 30px;
	margin-top: 20px;
}

.chapter {
	margin-bottom: 10px;
}

.chapter_time {
	background-color: #766854;
	color: white;
	padding: 4px;
	font-weight: bold;
}

.chapter_title {
	font-weight: bold;
}

footer {
	background-color: #766854;
	height: 80px;
}

.footer_container {
	display: flex;
	max-width: 1000px;
	margin: auto;
	padding: 20px;
}

@media screen and (max-width: 1000px) 
{
	.main {
		display: block;
	}
}

@media screen and (max-width: 1346px) 
{
	h1 {
		margin-top: 4%;
	}
}

@media screen and (max-width: 740px) 
{
	h1 {
		font-size: 16px;
		margin-right: 0;
	}
}

@media screen and (max-width: 460px) 
{
	h1 {
		margin: 2% 10%;
		font-size: 12px;
	}
}

@media screen and (max-width: 360px) 
{
	h1 {
		margin: 1% 10%;
	}
}