html,body{width:100%;height:100%;margin:0;font-family:Roboto,Helvetica,sans-serif;overflow:hidden}.app{grid-template:"Header Header Header"50px".ChatLog."1fr".ChatInput."60px/10% minmax(80%,1fr) 10%;gap:10px;width:100vw;height:100vh;display:grid}.header{grid-area:Header;width:100%;height:100%}.chat-log{grid-area:ChatLog;height:100%;overflow-y:auto}.chat-input{grid-area:ChatInput;margin-bottom:10px}