How do you replicate this box-shadow effect?

Tags: css3,box-shadow

Problem :

This is my first year in CSS and I'm trying to replicate this box-shadow effect I found on Udemy:

#1 Visual Aid

I'm trying my best to replicate this effect and this is the closet I've gotten:

#box {
  -webkit-box-shadow: 3px 14px 14px -11px rgba(245,245,245,1);
-moz-box-shadow: 3px 14px 14px -11px rgba(245,245,245,1);
box-shadow: 3px 14px 14px -11px rgba(245,245,245,1);
  width: 50px;
  height: 50px;
  background: white;

body {
  background: black;
<div id='box'> Hi </div>

How would you achieve this box-shadow effect?

Thanks! I solved the problem. After the fact, I discovered how Udemy solves this problem:

#A_16 {
    bottom: 0px;
    box-sizing: border-box;
    color: rgb(73, 133, 184);
    display: block;
    height: 34px;
    position: absolute;
    text-decoration: none;
    width: 358px;
    column-rule-color: rgb(73, 133, 184);
    perspective-origin: 179px 17px;
    transform-origin: 179px 17px;
    background: rgba(0, 0, 0, 0) linear-gradient(rgba(244, 244, 244, 0), rgba(244, 244, 244, 0.952941), rgb(244, 244, 244)) repeat scroll 0% 0% / auto padding-box border-box;
    border: 0px none rgb(73, 133, 184);
    font: normal normal bold normal 15px / 24px 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    outline: rgb(73, 133, 184) none 0px;
    padding: 0px 0px 10px 20px;

Solution :

The box-shadow property supports a keyword called "inset" for box-shadow inside a box. E.g. box-shadow: inset 0 -10px 5px 5px hsl(0, 0%, 90%);

(btw, no need for the prefixes, see )

HOWEVER, the effect is more likely a linear-gradient background effect with a element positioned absolutely at the bottom but overlaying the clipped content.

.box {
    position: relative;
    height: 5.5em;
    overflow: hidden;
    border: 1px solid #222;

.box footer {
    position: absolute;
    left: 0;
    bottom: 0;
    right: 0;
    padding-top: 0.5em;
    background: linear-gradient(0deg, #eee 80%, transparent 100%);
<div class="box">
    <footer>READ MORE</footer>

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