html {
  background: lightblue url("estiloP00.jpg");
}
body {font-size: 14pt; font-family: TimesNewRoman; color: rgb(102, 51, 51); text-align:justify; margin-left: 2.0in; margin-right: 2.0in} 
H1 {background: rgb(200, 250, 100); font-size: 18pt; font-weight: bold; color: rgb(40, 150, 75); text-align:center} 
H2 {background: yellow; font-size: 16pt; font-weight: bold; color: green;  text-align:center}
H3 {font-size: 14pt; font-weight: bold; color: red;  text-align:justify}