CSS and JS, make div follows scroll

问题

I have tried using position fixed but I just cannot seem to find out how to do it, I want my sidebar to stay fixed along the screen as the user scrolls, my sidebar element id is #displayside can someone please help me out and explain what I must do to have this fixed.

Please excuse me if this question is too obvious but I am just starting to code and I need help.

Thanks!

#displayside {
     width: 15%;
    /* margin-left: 25px; */
    float:right;
    text-align:center;
    padding:5px;
    margin:3px;
    background-image:url('/resources/images/htmlbg.jpeg');
   -moz-border-radius: 10px;
   -webkit-border-radius: 10px;
   border-radius: 10px; /* future proofing */
   -khtml-border-radius: 10px; /* for old Konqueror browsers */
   position: fixed;

回答1:

Use position:fixed

#displayside
{
 position:fixed;
}

and set top and left according to your requirement

as

#displayside
    {
     position:fixed;
     left:10px;
     top:10px;
    }

来源：https://stackoverflow.com/questions/11395201/css-and-js-make-div-follows-scroll