我想删除顶部的空间

我的风格主题（stackOverFlow的用户答案here）
我的代码

fun clickDatePicker() {
        setTheme(R.style.AppTheme_MaterailComponent)

        val local = Locale.KOREA
        Locale.setDefault(local)

        val builder = MaterialDatePicker.Builder.dateRangePicker()
        val picker = builder.build()
        picker.apply {
            addOnPositiveButtonClickListener { selection: Pair<Long, Long>? ->
                // just my other logic
                selection?.first?.let { setYearMonthDate(it) }
                    ?.let { it1 -> firstAndSecondMap.put(0, it1) }
                selection?.second?.let { setYearMonthDate(it) }
                    ?.let { it1 -> firstAndSecondMap.put(1, it1) }
                filterDate()
                binding.duration = 0
            }
            show(supportFragmentManager, "picker")
        }
        
}