/* Шапка урока */
.lesson-header-block.row-section {
    position: relative;
    padding-bottom: 10px !important;
    margin-top: 60px;
    
    background: 
        url() no-repeat top right,
        linear-gradient(180deg, #4E83E5 100%, #71A3FF 100%) !important;
    border: 0 !important;
    border-radius: 10px;
}

.lesson-header-block.row-section::before {
    content: url(https://fs.getcourse.ru/fileservice/file/download/a/22548/sc/207/h/6464d393a94caab4449e68d8af93be32.png);
    position: absolute;
    bottom: 1px;
    right: -22px;
    height: 254px;
}

.lesson-header-block .col-md-12 {
    position: relative;
    display: flex;
    flex-wrap: wrap;
    padding: 40px 30px 10px !important; 
}

.lesson-header-block .col-md-12::before {
    content: "";
    position: absolute;
    bottom: 0;
    left: 30px;
    width: 275px;
    height: 1px;
    
    border-bottom: 1px dashed #ffffff50;
}

.lesson-header-block .lesson-title-value {
    flex: 0 0 100%;
    order: 1;
    margin-bottom: 10px;
    padding: 5px 350px 0 0;
    
    font-weight: 200 !important;
    font-size: 24px;
    text-align: left;
    color: #fff;
}

.lesson-header-block .lesson-description-value {
    flex: 0 0 100%;
    order: 2;
    display: block;
    margin-bottom: 20px;
    padding: 5px 280px 0 0;
    
    font-weight: 700;
    font-size: 32px !important;
    text-align: left;
    color: #fff !important;
    line-height: 1;
}

.lesson-header-block .lesson-navigation {
    position: relative;
    color: #414141;
    font-size: 14px !important;
    z-index: 100;
}

.lesson-header-block .lesson-navigation tr {
    display: flex;
    flex-wrap: wrap;
}

.lesson-header-block .lesson-navigation td {
    margin: 10px 10px 30px;
    width: inherit;
   
}

.lesson-header-block .lesson-navigation td.text-center {
    display: none;
}

.lesson-header-block .lesson-navigation a {
    margin-bottom: 10px;
    padding: 5px 15px;
    
    color: #FEC80E;
    
    background: #4E83E5;
    border-radius: 5px;
    
    transition: all .3s;
}

.lesson-header-block .lesson-navigation a:hover {
    color: #fff;
    text-decoration: none;
    
    background: #71A3FF;
}

.lesson-header-block .lesson-navigation td:nth-child(1) a:before {
    content: "←  ";
}

.lesson-header-block .lesson-navigation .text-right a:after {
    content: "  →";
}

.lesson-header-block .lesson-navigation div.hidden-xs {
    display: none;
}

@media (max-width:768px) {
    .lesson-header-block .lesson-navigation a {
        padding: 3px 5px;
    }
    
    .flex-container.wrap-col {
		flex-flow: nowrap !important;
	}
}

@media (max-width:425px) {
    
    .lesson-header-block.row-section::before {
        display: none;
    }
    
    .lesson-header-block .lesson-description-value {
        margin: 0 !important;
        padding: 0 !important;
    }
    
    .lesson-header-block .lesson-description-value b {
        font-size: 24px !important;
    }
    
    .lesson-header-block .lesson-navigation a {
        padding: 3px 10px;
    }
    
    .lesson-header-block .lesson-title-value {
        padding: 15px 0 0;
    }
}

@media (max-width:375px) {  
    .lesson-header-block .col-md-12::before {
        width: 200px;
    }
    
    .lesson-header-block .lesson-navigation td {
        margin-bottom: 10px;
        padding-left: 20px;
    }
    
    .lesson-header-block .lesson-description-value {
        font-size: 20px !important;
    }
    
    .lesson-header-block .lesson-navigation td::nth-child(1) {
        margin-left: 20px !important;
    }
}

@media (max-width:320px) {
    .lesson-header-block .lesson-title-value {
        font-size: 30px;
    }
}