*, *::before, *::after{box-sizing:border-box;margin:0;padding:0;}.main{display:flex;flex-direction:column-reverse;gap:3px;height:100dvh;margin-inline:auto;overflow-y:scroll;padding-block:2dvh;scrollbar-width:none;width:min(100% - 2rem , 40rem);}.chat{display:flex;flex-direction:column;}