body{color:#fff;background-image:linear-gradient(#0af,#07a);margin:0;font-family:Inter,Avenir,Helvetica,Arial,sans-serif}.content{text-align:center;flex-direction:column;justify-content:center;min-height:100vh;line-height:1.1;display:flex;overflow-x:hidden}.content h1{-webkit-user-select:none;user-select:none;margin:1.5rem;font-size:3.6rem;font-weight:700}.content p{opacity:.5;font-size:1.2rem;font-weight:400}.wall{flex-flow:row-reverse wrap-reverse;justify-content:center;width:90%;height:100%;margin:auto;display:flex}.brick{opacity:.5;border:3px dashed #fff;border-radius:.3rem;flex-grow:1;margin:.2rem;padding:1rem;font-style:italic;display:inline-block}.brick.known{opacity:1;background-color:#a96;border:3px solid #fff;font-style:normal}.brick.unknown{opacity:.5;opacity:1;background:#000;border:3px solid #fff;font-style:normal}.tag{background:#aaa;border-radius:1rem;margin:.4rem;padding:.3rem;font-size:70%;display:inline-block}.tag.level-Basic{background:#88ca88}.tag.level-Intermediate{background:#77caca}.tag.level-Advanced{color:#fff;background:#4a4aaa}.selected-topic--background{background:#0000004d;flex-direction:column;justify-content:center;width:100vw;height:100vh;display:flex;position:fixed;top:0}.selected-topic{background-image:linear-gradient(#0af,#07a);border:3px solid #fff;border-radius:.5rem;width:80%;margin:auto;box-shadow:0 .5em 7rem #00000080}button{background-color:#ccc;border:3px solid #fff;border-radius:.3rem;margin:.3rem;padding:.8rem;transition:background-color .3s,box-shadow .2s;box-shadow:0 0 2rem #0003}button.igotthis{background:#65cc65;font-size:1.5rem}button.tolearn{background:#ff8777;font-size:1.5rem}button.active{color:#000;background:#fff}button:hover{background-color:#eee;transition:background-color .3s,box-shadow 1s;box-shadow:0 .3rem 2rem #00000080}button:active{background-color:#aaa;transition:background-color}.buttons-spread{flex-direction:row;justify-content:space-around;display:flex}button.unselected-toggle{color:#eee;background:0 0;transition:background-color}button.selected-toggle{background-color:#fff;transition:background-color}.asker{transition:background .5s}.asker.swiping.swipe-left{background:#ff8777}.asker.swiping.swipe-right{background:#65cc65}