/**common css**/
*{margin:0px;padding:0px}

/**wrapper**/
#wrapper{width:800px;height:400px;margin:10px auto}

/**header**/
#header{border:3px solid black;width:100%;height:100px;font-weight:bold;line-height:80px;font-size:25px}
#Tab-1{border-right:3px solid black;float:left;width:33.1%;height:100px;background:#FB046D}
#Tab-2{float:left;width:33%;height:100px;background:#FB046D}
#Tab-3{border-left:3px solid black;float:left;width:33.1%;height:100px;background:#FB046D}

/**content**/
#content{width:100%;height:300px}
#post1,#post2,#post3{border:3px solid black;border-top:none;width:100%;height:100px;}
#post2{display:none}
#post3{display:none}

#post1,#post2,#post3{background:#C0C0C0}