/*===== main_content =====*/
#main_content {
  border: 1px solid;
  background: url(/images/feature/content_right_green.png) repeat 0 0 #a5d4ad;
}
#main_story { background: url(/images/feature/content_right_main_bottom_green.png) no-repeat 0 bottom white; }
/*--- border_bottom ---*/
#main_content,
#main_story .description,
#main_story .introduction,
#side_bar .content .texts,
#main_story .introduction {
  border-color: #a5d4ad;
}
/*--- font_color ---*/
#main_content .main_color,
#main_story h4,
#main_story h5,
#main_story h5 a,
#main_story .introduction th {
  color: #00a95f;
}
/*--- goto_top ---*/
#main_content .goto_top a { background: url(/images/feature/arrow_top_green.png) no-repeat 0 center; }
#main_content .goto_top_right a { background: url(/images/feature/arrow_top_green.png) no-repeat right center; }
/*--- side_bar ---*/
#side_bar .content { background: url(/images/secret/side_bar_content_bg_bottom.png) no-repeat 0 bottom white; }


/*===== introduction =====*/
#main_story h4 { margin: 0 10px 1em; }
#main_story .float_left { float: left; }
#main_story .float_right { float: right; }
#main_story .articles {
  width: 245px;    /* widthが245px以外の場合はtagのstyleに直接widthを指定 */
}
#main_story .articles img { margin-bottom: 0.5em; }