html - Change scroll speed of specific element -

Okay, I'm not sure how this script is ... but to set one in either HTML or CSS Is there a fast scrolling speed for any specific item?

By using javascript,

  function pagecroll () {Window.scrollBy (0,50); Scollele = settimeout ('pagesolol ()', 100); } & Lt; Body onLoad = "pageScroll ()" & gt;   
 You can see the example!  
 Using CSS, you can refer to the post!  
 For more information, see the answer :)