$large-shadow: 0px 2px 10px rgba(0, 0, 0, 0);
$narrow-shadow: 0px 2px 6px rgba(0, 0, 0, 0);
$inset-shadow: inset 0px -2px 0px rgba(0, 0, 0, 0);
$inset-shadow-inverted: inset 0px 2px 0px rgba(0, 0, 0, 0);
$inset-relief: inset 0px 2px 0px rgba(255, 255, 255, 0);

$border-radius: 0px;
$border-size: 0px;

@mixin borders() {
  border: $border-size solid rgba(0, 0, 0, 0.3)
}

@mixin border-radius() {
  border-radius: $border-radius $border-radius $border-radius $border-radius;
}