<style>

????????#parent?{

????????????display:?table;

????????????width:?100%;

????????????table-layout:?fixed;

????????}

????????#left,

????????#center,

????????#right?{

????????????height:?300px;

????????}

????????#left?{

????????????border:?green?solid?1px;

????????????color:?green;

????????????width:?300px;

????????????display:?table-cell;

????????}

????????#center?{

????????????border:?hotpink?solid?1px;

????????????color:?hotpink;

????????????display:?table-cell;

????????}

????????#right?{

????????????border:?yellow?solid?1px;

????????????color:?yellow;

????????????width:?300px;

????????????display:?table-cell;

????????}

????</style>