[tailwind]What are those faintly visible lines on the checked radio? How to align checked images?

Question

What are those faintly visible lines on the checked radio? How to align checked images?

input {
    @apply border-Neutrals-Grey3 checked:border-Brand-Primary ring-0 ring-inset checked:bg-radio_checked checked:bg-[center_left_right] checked:bg-no-repeat checked:bg-[length:7.99px_7.99px] checked:text-Neutrals-White;
  }

Aligned input image and disappearing faint lines