@font-face {
  font-family: 'Spleen';
  src: url('spleen.otf') format('opentype');
}

body {
  background: url(img/SecBSD-Yatagarasu.jpg) no-repeat center center fixed;
  background-size: 100% 100%;
  color: #97fd00;
  display: flex;
  flex-direction: column;
  font-family: 'Spleen';
  font-size: 1em;
  margin: 0;
  padding: 0;
}

/* main style */

a {
  color: #97fd00;
  text-decoration: none;
}

h2 {
  color: #97fd00;
  display: block;
  font-weight: bold;
  margin: 0.67em;
}

h3 {
  color: #5852fb;
  display: block;
  margin: 0.67em;
}

.green {
  color: #97fd00;
}

.purple {
  color: #5852fb;
}

.title {
  display: block;
  font-weight: bold;
  margin: 2.5em 0 0 2.5em;
}

.subtitle {
  color: #5852fb;
  display: block;
  font-weight: bold;
  margin: 0 0 0 2.5em;
}

/* box */

.box {
  background-color: black;
  margin: 10px auto;
  opacity: 0.85;
  padding: 0.5em;
  width: 600px;
}

.team {
  margin: 10px auto;
  padding: 0.5em;
}

/* txt section */

.txt {
  height: auto;
  left: 100px;
  position: relative;
  top: -20px;
  width: 400px;
}

/* navigation */

nav {
  background: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
}

nav ul {
  align-items: center;
  background: none;
  display: flex;
  list-style: none;
  padding: 0 15em 0 0;
}

nav .active {
  color: #5852fb;
}

/* team */

.item {
  align-items: center;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.row {
  margin-bottom: 1.5rem;
}

/* logo */

nav div:first-child {
  margin: 0 0;
  padding: 1rem;
  text-align: center;
}

nav div:first-child img {
  height: 40px;
}

nav ul li {
  border-bottom: none;
  flex: 1 0 auto;
  position: relative;
}

nav ul li a {
  color: #97fd00;
  display: block;
  letter-spacing: 0.31em;
  line-height: 1;
  padding: 0.8rem 1rem;
  text-decoration: none;
  text-transform: uppercase;
}

ul.list {
  list-style: none;
}

ul.list li::before {
  content: "\2023";
  color: #5852fb;
  display: inline-block;
  width: 1em;
  margin-left: -1em;
}

/* welcome */

.welcome {
  left: 100px;
  line-height: 1.2;
  position: absolute;
  top: 100px;
  width: 560px;
}

/* docs */

.docs {
  left: 550px;
  top: 100px;
}

code {
  white-space: nowrap;
}

dt {
  float: left;
  margin-left: 40px;
}

dd {
  margin: 0 0 0 10em;
}

.cmdbox {
  border: 1px solid #97fd00;
  color: #97fd00;
  overflow: auto;
  padding: 10px;
}

/* footer */

.footer {
  bottom: 0;
  left: 0;
  position: fixed;
  padding: 10px;
  z-index: 1000;
}

/* contact  */

.contact li {
  display: inline-block;
  position: relative;
  top: -40px;
  left: -23px;
}

.lsf {
  font-size: 0.8em;
  position: relative;
  top: 15px;
  text-align: center;
}

/* mobile devices */

@media only screen and (max-width: 30em) {
  body {
  background-size: cover;
  background-position: top left;
  }

  nav {
    flex-direction: column;
  }

  nav div:first-child {
    justify-content: center;
    line-height: 0;
    text-align: center;
  }

  nav ul {
    background: none;
    flex-direction: column;
    list-style: none;
    padding: 0;
  }

  nav ul li a {
    display: block;
    line-height: 1;
    padding: 0.8rem 1rem;
    text-decoration: none;
  }

  /* box */

  .box {
    width: 380px;
  }

  /* txt section */

  .txt {
    height: auto;
    left: 0;
    top: 20px;
    width: auto;
  }

  /* welcome */

  .welcome {
    left: 10px;
    top: 435px;
  }

  /* docs */

  .docs {
    width: 95%;
    display: block;
    margin: 10px auto;
  }

  /* team */

  .team {
    width: 380px;
  }

  .team img {
    width: 100%;
  }

  /* footer */

  .footer {
    display: none;
  }
}