/*共通*/
head,nav,main,aside {
  display: block;
}
ul,ol,li {
  list-style-type: none;
}
header,#contents {
  margin: 0 auto;
  width: 100%;
}
header h1,header p {
  width: 100%;
  text-align: center;
}



main {
  width: 100%;
}
main div {
  width: 100%;
  text-align: center;
  border: 1px solid #000;
}
main div a {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100%;
  min-height: 48px;
  font-size: 16px;
  text-decoration: none;
}



/*タブレット*/
@media screen and (min-width:480px){

  main {
    display: flex;
    justify-content: space-around;
  }
  main div {
    width: 100%;
    max-width: 320px;
    min-height: 500px;
  }
  main div a {
    font-size: 24px;
  }
  
}

/*デスクトップ*/

@media screen and (min-width:960px){
}