TIL (Today I learned)

• TIL #1
  You can use `navigator.connection` to get information about the connection like round-trip time, bandwidth, connection type (e.g. 3g, 4g) or if Data-Saver is enabled.

  

• TIL #2
  You can pass an `options` object, which only has a single property, to the `focus()` method to prevent scrolling on focus.

  

• TIL #3
  The grid-auto-flow property takes up to two values. row, column, dense, row dense, or column dense.

  

• TIL #4
  IE 11 requires a unit to be added to the third argument (flex-basis) of the flex property.

  

• TIL #5
  How to get a random background-color (or any other value) each time I compile Sass.