Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

CSS CSS Layout Basics Page Layout with the Float Property The Float Challenge Solution

jiwan gurung
jiwan gurung
4,248 Points

my columns are not floating to left or right

/* ================================= Base Styles ==================================== */

  • { box-sizing: border-box; }

body { font-family: 'Varela Round', sans-serif; line-height: 1.6; color: #3a3a3a; }

p { font-size: .95em; margin-bottom: 1.5em; }

h2, h3, a { color: #093a58; }

h2, h3 { margin-top: 0; }

a { text-decoration: none; }

/* ================================= Base Layout Styles ==================================== */

/* ---- Navigation ---- */

.name { font-size: 1.25em; }

.name, .main-nav li { text-align: center; background: #fff; margin-top: 6px; margin-bottom: 6px; }

.name a, .main-nav a { padding: 10px 15px; text-align: center; display: block; }

.main-nav a {
    font-size: .95em;
    color: #3acec2;
    text-transform: uppercase;

.main-nav a:hover {
    color: #093a58;

/* ---- Layout Containers ---- */

.container { padding-left: 1em; padding-right: 1em; }

.main-header { padding-top: 1.5em; padding-bottom: 1.5em; background: #3acec2; margin-bottom: 30px; }

.main-footer { text-align: center; padding: 2em 0; background: #d9e4ea; }

/* ================================= Media Queries ==================================== */

@media (min-width: 789px) {

.wrap {
    min-height: calc(100vh - 89px);

.container {
    width: 85%;
    max-width: 1150px;
    margin: 0 auto;

.feat-img {
    width: 300px;
    float: left;
    margin-top: 5px;
    margin-right: 35px;
    margin-bottom: 15px;
    padding: 10px;
    border: solid 1px lightgrey;

    float: right;
    float : left;

.main-nav li{ float : left; } .clearfix::after{ content:""; display: table; clear:both; } /* column section*/ col { float: right; padding-left: 1em; padding-right: 1em; }

.primary {
    width: 60%;

.secondary {
    width: 40%;

/*p {
    border: solid 1px red;


Not sure of your question you are asking. But just incase you mean reversing the order from left to right all you have to do is change the columns float value from left to right. .col { float:right ; } That will then reverse your column.

1 Answer

Emmanuel Molina
Emmanuel Molina
9,268 Points

You forgot to add a "." before "col" therefore the browser doesn't target a class