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button{min-height:38px;font:inherit;cursor:pointer;border-radius:6px;align-items:center;gap:7px;padding:0 15px;font-size:12px;display:inline-flex}.lesson-previous{color:#a8bacb;background:#0d1c2d;border:1px solid #294158}.lesson-previous:disabled{opacity:.35;cursor:not-allowed}.lesson-next{color:#fff;background:#207de5;border:1px solid #2786ee;font-weight:600}.lesson-next:hover{background:#2b8bf5}@media (width<=900px){.course-player-header,.course-player-layout{grid-template-columns:1fr}.lesson-sidebar{border-bottom:1px solid #22374d;border-right:0}}