@charset "UTF-8";

/* --------------------------------
  reset
-------------------------------- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
ul {
  list-style: none;
}
a {
  color: inherit;
  text-decoration: none;
}
img {
  max-width: 100%;
  vertical-align: bottom;
}
html {
  font-size: 100%;
}


/* --------------------------------
  body
-------------------------------- */

body{
  display: grid;
  grid-template-rows: auto 1fr auto;
  min-height: 100vh;
  background-color: #fff;
  color: #333;
  font-size: 1.0rem;
  font-family: sans-serif;
  line-height: 1.8;
}

.header {
  padding: 20px 0;
  background-color: #8be5ec;
  text-align: center;
}
  .header h1 {
    font-size: 1.5rem;
  }
  .header h1::first-line {
    font-size: 1.125rem;
  }
  .btn {
    display: inline-block;
    width: 100%;
    margin-top: 10px;
    border: #fff;
  }
  .btn a {
    padding: 6px 20px;
    border: 2px solid #518f8e;
    color: #518f8e;
    font-weight: 700;
    transition: all .3s;
  }
  .btn a:hover {
    padding: 6px 20px;
    background-color: #fff;
    color: #518f8e;
  }
  
  @media screen and (max-width: 767px) {
    .header h1 {
      white-space: pre-line;
    }
  }

/* --------------------------------
  footer
-------------------------------- */
.footer {
  padding: 10px;
  background-color: #a4ebf0;
  text-align: center;
}


main{
/* min-height: 75vh; */
}
#gacha-img{
    max-width: 680px;
    margin: 0 auto;
    padding: 30px 10px;
    display: flex;
    justify-content: center;
    gap: 0 5px;
}
#gacha-img>img{
    width: 32%;
    display: block;
    border: 1px solid #333;
}
#gacha-img>img.main{
    border: 0;
}
#btn{
    display: block;
    border: 1px solid #333;
    width: 280px;
    margin: 0 auto;
    padding: 16px 0;
    text-align: center;
}