body {



}

<style>

.ladrillo {
  margin-left:8%;
  width: 85%;
  background: #ffffff;
  border-radius: 7px;
  padding: 7px;
  border-style: solid;
  border-top-width: 0px;
  border-top-color:#aaaaaa;
  border-bottom-width: 1px;
  border-bottom-color:#aaaaaa;
  border-left-width: 0px;
  border-left-color:#aaaaaa;
  border-right-width: 1px;
  border-right-color:#aaaaaa;
}

.fontPropTitulo{
  font-family: Arial, Helvetica, sans-serif;
  font-size: 150%;
  font-weight: bold;
}
.fontPropPrecio{
  font-family: Arial, Helvetica, sans-serif;
  font-size: 130%;
  font-weight: normal;
}
.fontDescripcion{
  font-family: Arial, Helvetica, sans-serif;
  font-size: 130%;
  font-weight: normal;
  line-height: 130%;  
}
.fontUltimaEdicion{
  font-family: Arial, Helvetica, sans-serif;
  font-size: 100%;
  font-weight: normal;
  font-style: italic;
  line-height: 130%;    
}
.fontColega{
  font-family: Arial, Helvetica, sans-serif;
  font-size: 80%;
  font-weight: normal;
}
</style>