CSS3 Flexbox 並べ方まとめ - Qiita<div id="flex"> <div class="flex-item">A</div> <div class="flex-item">B</div> <div class="flex-item">C</div> <div class="flex-item">D</div> <div class="flex-item">E</div> <div class="flex-item">F</div> <div class="flex-item">G</div> </div> *{ margin: 0; padding: 0; } /* #flexを画面中央に配置 */ html,body{ height: 100%; display: flex; justify-content: center; align-items: center; } /* flex-container */ #fl
