/*
  1. Prevent padding and border from affecting element width. (https://github.com/mozdevs/cssremedy/issues/4)
  2. Remove default margins and padding
  3. Reset all borders.
*/

*,
::after,
::before {
  box-sizing: border-box;
  /* 1 */
  margin: 0;
  /* 2 */
  padding: 0;
  /* 2 */
}