.lesson-header:after{bottom:-2.5rem;right:2.5rem;display:none;width:15rem}@media (min-width:768px){.lesson-header:after{display:block}}.lesson-header:after{content:"";height:100%;position:absolute;opacity:.2;background:url(/img/feather.png);background-position:50%;background-repeat:no-repeat;background-size:15rem,15rem}