Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

HTML Build a Responsive Website Creating a Fluid Foundation Scalable Images

Incorrect challenge

This challenge requires me to convert the padding of the cake class from pixels to percentages. It incorrectly requires me to calculate this percentage using the cake class' width instead of its parent's (.icing) width. Is the challenge wrong or am I confused?

2 Answers

Can you post the code please?

<!DOCTYPE html>
<html>
    <head>
        <style>

            /* When setting ?exible margin on an element, your context is the width of the element’s container.
            When setting ?exible padding on an element, your context is the width of the element itself. */

            p {
                margin: 0;
            }
            body {
                color: #fff;
            }
            .container, .icing, .cake, .filling {
                box-sizing:border-box;
                -moz-box-sizing:border-box; /* Firefox */
                -webkit-box-sizing:border-box; /* Safari */
            }
            .container {
                max-width: 700px;
            }
            .icing {
                background-color: #B4C34F;
                width: 100%; /*700px*/
        padding: 10px;
            }
            .cake {
                background-color: #f8748f;
                width: 85.714285714%; /*600px*/
        margin: 1.428571429%;
        padding: 10px;
            }
            .filling {
                background-color: #4FB69F;
                width: 83.33333333%; /*500px*/ 
        margin: 1.6666666666%;
        padding: 10px;
            }

        </style>        
    </head>
    <body>
        <div class="container" id="container">
        <div class="icing">
            <p>Icing</p>
            <div class="cake">
                <p>Cake</p>
                <div class="filling">
                    <p>Filling</p>
                </div>
            </div>
        </div>
        </div>
    </body>
</html>

While the code specifies that ``` /* When setting ?exible margin on an element, your context is the width of the element’s container. When setting ?exible padding on an element, your context is the width of the element itself. */

However, [MDN](https://developer.mozilla.org/en-US/docs/Web/CSS/padding) specifies that a percentage value for padding is with respect to the *containing block*.