body
  margin 0
  font-family Roboto, Arial, sans-serif
  background-color #f8f8f8

header
  display sticky
  top 0

#main_layout
  background-color #f8f8f8

.seccion-final
  height 160px
  background linear-gradient(to bottom, rgba(255,255,255,0) 0%, rgba(194,194,194,1) 100%)