<! DOCTYPE html > < html lang = "es" > < head > < meta charset = "UTF-8" > < title > Monitor de Temperaturas </ title > < script src = "https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.29.1/moment.min.js" ></ script > < style > body { font-family : Arial , sans-serif ; max-width : 1200px ; margin : 0 auto ; padding : 20px ; background-color : #f0f2f5 ; } .dashboard { display : grid ; grid-template-columns : repeat ( 3 , 1fr ); gap : 20px ; ...