html, body {
	z-index: 0;
	overflow-x:hidden; 
	#overflow-y:hidden;
	font-family: 'Roboto', sans-serif;
	font-weight: 400; 
}

* {
	box-sizing: border-box;
}

.logo {
    position: absolute;
    height: auto;
    top: -90px;
}

.header-avatar {
	position: fixed;
	width: auto;
	height: 80px;
	margin: 5px;
}

.header-avatar img {
	margin: 0 10px;
	width: 50px;
	height: 50px;
	}

.nanbar-nav {

}

.navbar {
	background: #34495e;
	position: fixed;
	margin-top: 70px;
	align-items: flex-start;
	height: 100vh;
	margin-left: 0px;
}

.main-content {
	margin-top: 100px;
	margin-bottom: 80px;
}

.right_colunm_padding {
	margin-left: 20px;
}


.lesson-name {
	font-size: 22px;
	line-height: 23px;
}

.lessons {
	vertical-align: middle;
}

.user {
	font-weight: bold;
}

.user {
	margin-left: 5px;
}

.text {
	display: block;
	margin-left: 70px;
}

.user,.date {
	display: inline-block;
}

.comment {
	font-size: 14px;
}

.btn.float-right {
	width: 200px;
	margin-left: 20px;
	margin-bottom: 20px;
}

.avatar {
	float: left;
}

.avatar img {
	width: 50px;
	height: 50px;
	background-image: url('../img/loading.gif');
    background-repeat: no-repeat;
    background-position: 50% 50%;
    background-size: 40px 40px;
}

.navbar-nav .nav-link {
    padding-right: 20px;
    padding-left: 20px;
}

a.nav-link:hover {
    border-left: 4px solid #5faee3;
    background: #2c3e50;
    color: #fff;
    padding-right: 16px;
    padding-left: 16px;
}

.middle {
	/*height: 50px;
	line-height: 50px;*/
	display: -webkit-flex;
	display: -moz-flex;
	display: -ms-flex;
	display: -o-flex;
	display: flex;
    align-items: center;
    justify-content: center;
}

.main_comm {
	background-color: rgba(0,0,0, 0.10);
	border-radius: 20px;
}

.likes_count {
	display: block;
	position: absolute;
	padding-top: 2px;
	margin-left: 70px;
	margin-bottom: 5px;
}

span > .fa-heart  {
	cursor: pointer;
	padding-right: 3px;
}

.who_likes {
	display: inline-flex;
	justify-content: center;
	align-items: center;
	visibility: hidden;
	position: absolute;
	border-left: none;
	border-radius: 10px;
	background-color: rgba(0,0,0,0.8);
	top: -50px;
	left: 20px;
	padding: 10px;
	margin: 0 auto;
	text-align: center;
}

.who_likes:before {
	content: "";
    position: absolute;
    height: 0;
    width: 0;
    right: 100%;
    top: 50%;
    border:10px solid transparent;
    border-right: 10px solid rgba(0,0,0,0.8);
}

.who_likes > .avatar {
	padding: 0 5px;
	border-radius: 5px;
}