.lesson{font-size:10rem;transition:opacity .5s;animation:.5s fadeIn}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.lesson.fadeOut{opacity:0}
.titlebar{border-bottom:1px solid #ccc;margin-bottom:3rem}.titlebar__heading{text-align:right;margin-bottom:3rem;font-size:3.4rem;font-weight:300}
.continue__wrapper{justify-content:flex-end;display:flex}.continue__button{text-align:center;text-shadow:1px 1px 4px #741225;color:#fff;cursor:pointer;background-color:#df0c35;border-radius:.5rem;margin:2rem 0;padding:1rem 5rem;font-size:1.7rem;font-weight:500;transition:background-color .3s}.continue__button[disabled]{cursor:not-allowed;background-color:gray}