@mixin border-shadow() {
  box-shadow: inset 0 0 0.5px 1px hsla(0, 0%,
    100%, 0.075),
  0 0 0 1px hsla(0, 0%, 0%, 0.05),
  0 0.3px 0.4px hsla(0, 0%, 0%, 0.02),
  0 0.9px 1.5px hsla(0, 0%, 0%, 0.045),
  0 3.5px 6px hsla(0, 0%, 0%, 0.09);
}