body{padding:0;margin:0}.flex{display:flex;width:100%}.flex .first_div{width:33.33%;height:3px;background-color:#00a3f7}.flex .second_div{width:33.33%;height:3px;background-color:#eea149}.flex .third_div{width:33.33%;height:3px;background-color:#dd3c64}