CSS

input[type='checkbox']
{
    transform: scale( 2 );
    margin-right: 1.5em;
}

Html

<div class="form-check d-flex align-items-center mb-3">
    <input class="form-check-input" type="checkbox" value="" id="mChk1">
    <label class="form-check-label" for="mChk1">
        t urpt uwit urig ejgwugjmbnesiwhr wit pwi ho joid wptig wuweo
    </label>
</div>

<div class="form-check d-flex align-items-center mb-3">
    <input class="form-check-input" type="checkbox" value="" id="mChk2">
    <label class="form-check-label" for="mChk2">
        t urpt uwit urig ejgwugjmbnesiwhr wit pwi ho joid wptig wuweo owugwkvn wptewuglbwgutw nbwp riweupriu eoriwei wruwe oruweknwprfeoi uwepowpeoi urwepoiw epoif wpeihwephpo nwpwhfwepoio wieru eiurewpir f powg
    </label>
</div>

Why??