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azazlife
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solved with flexbox - fixed sidebars with fluid center
<body class="app"> <header class="app__navbar"></header> <main class="app__body"> <div class="app__main"> <div class="center-area"><p>Center Area</p></div> <div class="left-sidebar"><p>Left Sidebar</p></div> <div class="right-sidebar"><p>Right Sidebar</p></div> </div> <footer></footer> </main> </body>