.skeleton{animation:skeleton-loading 1s linear infinite alternate}@keyframes skeleton-loading{0%{background-color:#c8d4da}to{background-color:#e7ecef}}.skeleton-text-big{width:480px;max-width:100%;height:2.25rem;border-radius:.5rem}.skeleton-text-default{width:100%;height:1.1rem;border-radius:.25rem}.ytm-course-breadcrumb{display:flex;flex-wrap:nowrap;margin-bottom:.75rem;cursor:pointer;-webkit-user-select:none;-moz-user-select:none;user-select:none;transition:all .2s ease-in-out}.ytm-course-breadcrumb:hover{transform:scale(1.02)}.ytm-course-breadcrumb-text{font-size:.9rem;color:#6b6b6b;max-width:min(80vw,25rem);overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.ytm-lesson-head-wrapper{width:100%;display:flex}.ytm-lesson-head-icon{position:relative;top:.3rem;height:1.85rem;min-width:2rem;cursor:pointer;transition:.1s ease}.ytm-lesson-head-icon:hover{transform:scale(1.05)}.ytm-lesson-buttons{display:flex;justify-content:right;flex-wrap:wrap;gap:.5rem .9rem}.ytm-lesson-tabs{display:flex;margin-bottom:1.75rem}.ytm-modal-input[data-v-1dccb9a6],.ytm-modal-input[data-v-ceab82dc]{margin-bottom:1.25rem}.ytm-no-hover[data-v-ae395300]:hover{transform:none}.ytm-prolong[data-v-ae395300]{position:absolute;left:0;bottom:-1.1rem;width:100%;display:flex;flex-wrap:nowrap;justify-content:center;gap:.3rem}.ytm-prolong-button[data-v-ae395300]{color:#fff;font-weight:600;font-size:.9rem;background-color:#07a8f0;padding:.2rem .6rem;border-radius:.5rem;transition:.2s ease-in-out;opacity:0}.ytm-prolong-button[data-v-ae395300]:hover{transform:scale(1.13)}.ytm-lesson-meta:hover .ytm-prolong-button[data-v-ae395300]{opacity:1}