*{margin:0;padding:0;box-sizing:border-box}body,html{width:100%;height:100%}body{-webkit-user-select:none;-moz-user-select:none;user-select:none}[contenteditable=""],[contenteditable=true],input,select,textarea{-webkit-user-select:text;-moz-user-select:text;user-select:text}