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button{float:right;border:0;background:none;color:inherit}@media(max-width:700px){.app-shell{grid-template-columns:78px minmax(0,1fr)}.sidebar-head{padding:18px 19px}.sidebar-head>div:last-child,.section-label,.room-name,.lock,.sidebar-foot{display:none}nav{padding:0 8px}.room{justify-content:center;padding:12px}.chat-head{padding:20px 16px;align-items:flex-start;flex-direction:column}.encryption-badge{font-size:10px}.messages{padding:20px 14px}.message{max-width:90%}.composer{margin:0 14px 25px}.welcome h3{font-size:23px}}