*{margin:0;padding:0;box-sizing:border-box;-moz-user-select:none;user-select:none;-webkit-user-select:none}[contenteditable],input,textarea{-moz-user-select:auto!important;user-select:auto!important;-webkit-user-select:auto!important}body,html{height:100%;background-color:#f8f8f8}img{-webkit-touch-callout:none;-webkit-user-select:none;-moz-user-select:none;user-select:none}#app{width:100%;background:#f8f8f8;display:flex;flex-direction:column;position:relative;height:100%}#app .app-content{flex:1;display:flex;flex-direction:column;overflow:hidden;min-height:0}:root{--app-height:100vh}