Alt-k
9/2/2019 - 8:01 AM

【最新】上下左右中央揃え

（参考サイト） https://coliss.com/articles/build-websites/operation/css/centering-in-css.html

style.css
content_copyfile_download
.container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}