body {
  font-family: 'Noto Sans JP', "Hiragino Kaku Gothic Pro", Meiryo, sans-serif;
  padding: 0;
  margin: 0;
  background-color: #f4f4f4;
  color: #15424a;
}

/* Global */
.container {
  width: 80%;
  margin: auto;
  overflow: hidden;
}

ul {
  margin: 0;
  padding: 0;
}

h1 {
  font-size: 20px;
}

h2 {
  font-size: 18px;
}

h3 {
  font-size: 15px;
}

p {
  font-size: 15px;
}

.dark {
  padding: 15px;
  background-color: #15424a;
  color: #ffffff;
  margin-top: 10px;
  margin-bottom: 10px;
}

.alerm {
  background-color: #ffffff;
  color: #e8491d;
}

.warnning {
  background-color: #ffffff;
  color: #e8491d;
}

/* Header **/
header {
  background-color: #15424a;
  color: #ffffff;
  padding-top: 30px;
  min-height: 70px;
  border-bottom: #ff9999 3px solid;
}

header a {
  color: #ffffff;
  text-decoration: none;
  text-transform: uppercase;
  font-size: 15px;
}

header li {
  float: left;
  display: inline;
  padding: 0 20px 0 20px;
}

header #branding {
  float: left;
}

header #branding h1 {
  margin: 0;
}

header nav {
  float: right;
  margin-top: 10px;
}

header .highlight,
header .current a {
  color: #e8491d;
  font-weight: bold;
}

header a:hover {
  color: #f4f4f4;
  font-weight: bold;
}

/* Showcase */
#showcase {
  min-height: 400px;
  background: url("../img/showcase.jpg") no-repeat 0 -400px;
  text-align: center;
  color: #15424a;
}

#showcase h1 {
  margin-top: 100px;
  font-size: 40px;
  margin-bottom: 10px;
}

#showcase p {
  font-size: 20px;
}

#showcase p.alerm {
  text-decoration: underline;
  font-weight: bold;
  color: crimson;
  background-color: aliceblue;
  font-size: 17px;
}

#description {
  padding: 12px;
  color: #ffffff;
  background: #15424a;
}

/* documemts */
#documents {
  margin-top: 20px;
}

#documents .doc {
  float: left;
  text-align: center;
  width: 30%;
  padding: 10px;
}

/* Boxes */
#boxes {
  margin-top: 20px;
}

#documents a:link {
  color: #15424a;
  text-decoration: none;
  font-weight: bold;
  padding: 5px;
}

#documents a:visited {
  text-decoration: none;
}

#documents a:hover {
  color: #ffffff;
  text-decoration: underline;
  background-color: #15424a;
  border-radius: 0.5em
}

#documents a:active {
  text-decoration: underline;
}

#boxes .box {
  float: left;
  text-align: center;
  width: 30%;
  padding: 10px;
}

#boxes .box .img1 {
  height: 250px;
  border-radius: 10%;
}

#boxes .box .img2 {
  height: 250px;
 
}

#boxes .box .img3 {
  height: 250px;
  border-radius: 10%;
}

footer {
  padding: 10px;
  margin-top: 10px;
  color: #ffffff;
  background-color: #15424a;
  text-align: center;
}

/* Media Queries */
@media screen and (max-width: 1280px) {
  #boxes .box .img1 {
    height: 200px;
    border-radius: 10%;
  }

  #boxes .box .img2 {
    height: 170px;
  }

  #boxes .box .img3 {
    height: 170px;
    border-radius: 10%;
  }
}

@media screen and (max-width: 960px) {

  header #branding,
  header nav,
  header nav li,
  #documents .doc,
  #boxes .box {
    float: none;
    text-align: center;
    width: 100%;
  }

  header {
    padding-bottom: 20px;
  }

  #branding {
    font-size: 20px;
  }

  #showcase h1 {
    margin-top: 40px;
    font-size: 40px;
  }

  #description {
    display: block;
    width: 100%;
    margin-bottom: 5px;
  }
}