.container{justify-content:center;align-items:center;gap:10px;margin-top:150px;display:flex}.letter{font-size:50px;transition:color .3s}@media only screen and (width<=767px){.letter{font-size:40px}}.letter:active{transform:scale(1.5)}body{background-color:#f5f5f5;font-family:Inter,sans-serif}*{-webkit-tap-highlight-color:transparent}.controls{justify-content:center;margin-top:160px;display:flex}.toggle-btn{cursor:pointer;background:0 0;border:2px solid #000;border-radius:50%;justify-content:center;align-items:center;width:50px;height:50px;padding:10px 20px;font-size:22px;display:flex}.toggle-btn:active{background-color:#cdcdcd}.fa-solid{color:#000}