@charset "utf-8";

/* common */

body {
  margin: 0;
}

ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

h2 {
  margin: 0;
  font-size: 32px;
  color: #333;
  text-decoration: underline 1px;
  text-underline-offset: 10px;
  text-align: center;
}

h3 {
  margin: 8px 0 0;
  font-size: 16px;
  color: #333;
}

p {
  margin:  12px 0 0;
  font-size: 14px;
  color: #333;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  width: calc(100% - 48px);
  box-sizing: border-box;
}

/* header */

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4px 0;
}

h1 {
  margin: 0;
}

h1 img {
  width: 125px;
  height: 50px;
  vertical-align: bottom;
}

h1 a:hover {
  opacity: 0.7;
}

.header-nav-list {
  display: flex;
}

.header-nav-item.item-1 {
  width: 80px;
}

.header-nav-item {
  cursor: pointer;
}

.header-nav-item:hover {
  opacity: 0.7;
}

a {
  text-decoration: none;
  color: #333;
}

/* main */

.main-div img {
  width: 100%;
  height: 640px;
  object-fit: cover;
}

/* .main-section-1 */

.main-section-1 {
  padding: 64px 0 32px;
}

.about-wrapper {
  max-width: 520px;
  padding: 0 5%;
  margin: 0 auto;
}

.main-section-1-div {
  margin: 58px 0 0 0;
}

.main-section-1-div img {
  width: 96px;
  height: 96px;
  border-radius: 50%;
}

.main-section-1-div-2 {
  text-align: center;
}

/* .main-section-2 */

.main-section-2 {
  padding: 64px 0 64px;
}

.main-section-2-list {
  text-align: center;
}

.main-section-2-item img {
  width: 100%;
  margin-top: 32px;
}

.main-section-2-item.item-1 {
  margin-top: 32px;
}

/* footer */

footer {
  padding: 64px 0 8px;
  text-align: center;
}

small {
  color: #333;
  font-size: 8px;
}

/* large screen */

@media (min-width: 600px) {

  /* .main-section-1 */

  .main-section-1-div {
    gap: 32px;
    margin: 64px auto 0;
    display: flex;
  }

  .main-section-1-div-3 h3 {
    margin: 0;
  }

  /* main-section-2 */

  .main-section-2-list {
    display: flex;
    gap: 16px;
  }

  .main-section-2-item {
    margin-top: 32px;
    flex: 1;
  }

}