https://dmlab.jp/js/scrHeader.min.js

1$(function () {
2	$('a[href^=#]').click(function(){
3            var headerHight = $("#headerFrame").innerHeight();
4	        var href= $(this).attr("href");
5	        var target = $(href == "#" || href == "" ? 'html' : href);
6	        var position = target.offset().top-headerHight;
7	        $("html,body").animate({scrollTop:position}, 550, "swing");
8			return false;
9   });
10
11    var thisUrl = $(location).attr('href');
12    if ( ~thisUrl.indexOf("#") ) {
13            var headerHight = $("#headerFrame").innerHeight();
14    		var url_sp = thisUrl.split("#");
15	        var target = $('#' + url_sp[url_sp.length - 1]);
16	        var position = target.offset().top-headerHight;
17	        $("html,body").animate({scrollTop:position}, 550, "swing");
18			return false;
19    }
20});