@charset "UTF-8";

html {
  font-size: 62.5%;
}

body {
  font-size: 1.4rem;
  color: #383E45;
}

img {
  max-width: 100%;
}

a {
  text-decoration: none;
}

li {
  list-style: none;
}

.site-title {
  width: 120px;
  padding: 15px 0 10px;
}

.site-title a {
 display: block;
}

.site-title:hover {
  opacity: .8;
}

.sec-title {
  display: inline-block;
  font-size: 3.2rem;
  border-bottom: solid 1px #383E45;
  text-align: center;
  margin-bottom: 60px;
}

.content-title {
  font-size: 1.6rem;
  margin: 10px 0;
}

.wrapper {
  max-width: 960px;
  margin: 0 auto 100px;
  padding: 0 4%;
  text-align: center;
}


/* header */
#header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 0 auto;
}

#header ul {
  display: flex;
  padding: 10px 0;
}

#header li {
  margin-left: 30px;
}

#header li a {
  color: #24292E;
}

#header li a:hover {
  opacity: 0.7;
}

/* fv */
.fv {
  margin-bottom: 80px;
}

.fv img {
  width: 100%;
  max-width: 1920px;
  height: 600px;
  object-fit: cover;
}

/* about */
#about .content {
  display: flex;
  justify-content: center;
  align-items: center;
}

.content img {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  margin-right: 30px;
}

.content .text {
  text-align: left;
}

/* marine */
#marine ul {
  display: flex;
  justify-content: space-between;
}

#marine li {
  width: 32%;
}

/* footer */
footer {
  font-size: 0.5rem;
  padding: 10px 0;
  text-align: center;
}

@media screen and (max-width: 600px) {
  /* fv */
  .fv img {
    height: calc(100vh - 60px);
  }

  /* about */
  #about .content {
    flex-direction: column;
  }

  #about img {
    margin-right: 0;
  }

  #about .text {
    margin-top: 20px;
  }

  /* marine */
  #marine ul {
    flex-direction: column;
  }


  #marine li {
    width: 100%;
    margin-bottom: 30px;
  }
}