.dl_info{
width:fit-content;
  margin:auto;
}


span{
  font-size:18px;
  font-family:"ヒラギノ角ゴ Pro W3", "Hiragino Kaku Gothic Pro", "メイリオ", Meiryo, Osaka, "ＭＳ Ｐゴシック", "MS PGothic", sans-serif;
  font-weight:bold; 
  text-align:center;
  color:#000;
  display:inline-block;
}


@media screen and (max-width: 560px) {
  span{
   font-size:14px;
   letter-spacing:0.05em;
  }