.sa20-lesson .sa20-lesson-nav{max-width:875px;display:flex;flex-wrap:wrap;gap:.7rem 1.15rem;justify-content:space-between;align-items:center;border-top:1px solid rgba(34,39,51,.15);padding:1.25rem 0;margin:1.5rem auto 0}.sa20-lesson .sa20-lesson-nav a{color:inherit;font-weight:650;text-decoration:underline;text-underline-offset:3px}@media(max-width:640px){.sa20-lesson .sa20-lesson-nav{flex-direction:column;align-items:stretch}.sa20-lesson .sa20-lesson-nav a{padding:.35rem 0}}