@media (max-width: 500px) {
  * {
    list-style: none;
    text-decoration: none;
    margin: 0;
    padding: 0;
  }

  :root {
    --main-color: #f5f5f5;
    --sub-color-green: #2c5f2d;
    --sub-color-beige: #c2b280;
    --accent-color: #ff7f50;
    --text-color: #333;
  }

  header {
    width: 100%;
    height: 60px;
    /* background-color: ; */
    box-shadow: 4px 0 1px 1px #f2f2f2;
  }

  .header_nav {
    width: 350px;
    margin: auto;
  }

  .header_ul {
    width: 99%;
    display: flex;
    justify-content: center;
    line-height: 60px;
  }

  .header_ul a {
    color: var(--text-color);
    margin: auto 15px;
  }

  main {
    width: 100vw;
    background-color: var(--main-color);
    padding: 130px 0 0 0;
  }

  .top_content {
    width: 360px;
    height: 265px;
    background-color: #9c9c9c;
    margin: 0 auto 250px;
    border-radius: 10px;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
  }

  h1 {
    font-size: 2em;
    color: #fff;
    text-align: center;
    line-height: 80px;
  }

  .top_content > p {
    color: #fff;
  }

  h2 {
    text-align: center;
    font-size: 2rem;
    color: var(--sub-color-green);
    margin: 0 0 35px 0;
  }

  section {
    margin: 130px auto;
  }

  #about_section {
    width: 95%;
    height: 300px;
    /* margin: 50px auto; */
  }

  .about_text {
    text-align: center;
  }

  main#about_section p {
  }

  #works_section {
    width: 95%;
    height: 760px;
    /* margin: 50px auto; */
  }

  .works_content {
    display: flex;
    flex-direction: column;
    /* justify-content: space-around; */
  }

  .works_contents {
    width: 95%;
    height: 200px;
    text-align: center;
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 0 6px 2px #e0e0e0;
    box-sizing: border-box;
    margin: 15px auto;
    padding: 5vh 3%;
  }

  .works_contents > h3 {
  }

  .works_contents > p {
    margin: 8px 0;
  }

  #hobby_section {
    width: 95%;
    height: 700px;
  }

  .hobby_content {
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
  }

  .hobby_photo_content {
    width: 80%;
    display: flex;
    /* flex-wrap: wrap; */
    flex-direction: column;
    justify-content: center;
    align-items: center;
    column-gap: 16px;
  }

  .hobby_photo_content > div {
    width: 70%;
    height: 150px;
    overflow: hidden;
    margin: 8px 0;
  }

  .hobby_photo_content img {
  }

  #blog_section {
    width: 95%;
    height: 650px;
    margin: 100px auto 0;
  }

  .blog_content {
    width: 99%;
    height: 100%;
    margin: 0 auto;
  }

  .blog_content > p {
    text-align: center;
  }

  .blog_contents {
    width: 100%;
    height: 23%;
    background-color: #fff;
    border-radius: 10px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    margin: 12px auto;
    box-shadow: -3px 3px 4px 1px #e1e1e1;
    /* transition: box-shadow 0.4s; */
  }

  .blog_contents:hover {
    
  }

  footer {
    width: 100%;
    height: 110px;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: var(--sub-color-green);
  }

  footer p {
    color: #fff;
  }
}