.default-theme-mode{width:100%;height:400px;display:flex;display:-webkit-flex;flex-direction:row;flex-wrap:wrap;-webkit-justify-content:center;justify-content:center;-webkit-align-items:center;align-items:center;align-content:center;background:#333;text-align:center;border:5px solid #222;box-sizing:border-box;color:#fff}.default-theme-mode::after{content:"ここにブログ内容が入ります";font-size:24px}