Astra_LifterLMS::llms_single_lesson_css()

		public function llms_single_lesson_css() {
			$single_lesson_static_css = '
			.single-lesson.ast-separate-container .llms-lesson-preview .llms-lesson-link {
				background: #fff;
			}

			.single-lesson.ast-separate-container .llms-lesson-preview .llms-lesson-link:hover {
				background: #fafafa;
			}

			.single-lesson .ast-article-single .llms-lesson-button-wrapper {
				font-weight: 600;
			}

			.single-lesson .ast-article-single .llms-lesson-button-wrapper .llms-complete-lesson-form .llms-field-button:before {
				content: "\2714";
				margin-right: .5em;
			}

			.single-lesson .llms-course-navigation {
				padding: 2em 0 0;
				border-top: 1px solid #eeeeee;
			}

			.single-lesson .llms-course-navigation .llms-lesson-preview {
				vertical-align: top;
				margin-top: 0;
			}

			.single-lesson .llms-course-navigation .llms-lesson-preview .llms-lesson-link {
				padding-left: 20px;
				padding-right: 20px;
			}

			.single-lesson .llms-course-navigation .llms-prev-lesson h6.llms-pre-text:before {
				content: "\2190";
				margin-right: .5em;
			}

			.single-lesson .llms-course-navigation .llms-back-to-course:first-child h6.llms-pre-text:before {
				content: "\2190";
				margin-right: .5em;
			}

			.single-lesson .llms-course-navigation .llms-prev-lesson ~ .llms-back-to-course h6.llms-pre-text:after,
			.single-lesson .llms-course-navigation .llms-next-lesson h6.llms-pre-text:after {
				content: "\2192";
				margin-left: 5px;
			}

			.single-lesson .llms-course-navigation .llms-prev-lesson ~ .llms-back-to-course .llms-lesson-title,
			.single-lesson .llms-course-navigation .llms-prev-lesson ~ .llms-back-to-course .llms-lesson-excerpt,
			.single-lesson .llms-course-navigation .llms-prev-lesson ~ .llms-back-to-course h6.llms-pre-text,
			.single-lesson .llms-course-navigation .llms-next-lesson .llms-lesson-title,
			.single-lesson .llms-course-navigation .llms-next-lesson .llms-lesson-excerpt,
			.single-lesson .llms-course-navigation .llms-next-lesson h6.llms-pre-text {
				text-align: right;
			}

			@media (max-width: 544px) {
				.single-lesson .llms-course-navigation {
				  padding-top: 1.5em;
				}
				.single-lesson .llms-course-navigation .llms-course-nav {
				  width: 100%;
				  margin: 0;
				}
				.single-lesson .llms-course-navigation .llms-course-nav:first-child {
				  margin-bottom: 1.5em;
				}
			}';
			return Astra_Enqueue_Scripts::trim_css( $single_lesson_static_css );
		}