body {
    margin: 0;
    font-family: 'Helvetica Neue', sans-serif;
    background-color: #ffffff;
    color: s#585858;
  }
  
#img20260720 {
  width: 100%;
  max-width: 500px;
  height: auto;
  display: block;
  margin: 0 auto;
}
  #wrap {
    max-width: 960px;
    margin: 0 auto;
    padding: 20px;
  }
  
  header {
    text-align: center;
  }
  
  header h1 a {
    text-decoration: none;
    color: #6b6b6b;
  }
  
  nav ul {
    list-style: none;
    padding: 0;
    display: flex;
    justify-content: center;
    gap: 20px;
  }
  
  nav ul li a {
    text-decoration: none;
    color: #7a7a7a;
  }
  
  main {
    padding: 1rem;
    margin: 0 auto;
    max-width: 1200px;
    display: block;
  }
  .center {
    text-align: center;

  }
  
  footer {
    text-align: center;
    padding: 20px;
    font-size: 0.9em;
    color: #5c5c5c;
  }
  
  .container {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 20px;
  }
  
  @media screen and (min-width: 768px) {
    .sec01,
    .sec02,
    .sec03 {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }
  }

.center a,
.center a:visited {
  color: #585858;   /* 好きな色に変更 */
  text-decoration: underline;
}

.center a:hover,
.center a:active {
  color: #585858;   /* ホバーやクリック時も同じ色 */
  text-decoration: underline;
}