.lesson-header:after{width:15rem;height:100%;display:none;bottom:-2.5rem;right:2.5rem}@media (min-width:768px){.lesson-header:after{display:block}}.lesson-header:after{content:"";opacity:.2;background-color:#0000;background-image:url(/img/feather.png);background-position:50%;background-repeat:no-repeat;background-size:15rem,15rem;background-attachment:scroll;background-origin:padding-box;background-clip:border-box;height:100%;position:absolute}