<body class='2. And change the class to no-sidebar, left-sidebar or right-sidebar.It should look like this:
<body class='no-sidebar'><body class='left-sidebar'><body class='right-sidebar'>3. And click on "Save theme".
<body class='2. And change the class to no-sidebar, left-sidebar or right-sidebar.<body class='no-sidebar'><body class='left-sidebar'><body class='right-sidebar'>3. And click on "Save theme".