/* styles css file*/
@charset "UTF-8";

body {
  padding-top: 55px;
  text-align: center;
  background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url("../images/background.jpg");
  background-repeat: no-repeat;
  background-position: center;
  background-attachment: fixed;
  background-size: cover;
  color: white;
}
.navbar {
  /*transition: top 0.6s;*/
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  max-width: 778px;
  margin: 0 auto;
}
.nav-link:hover {
  text-decoration: underline;
}
section {
  padding: 60px 0;
  max-width: 778px;
  margin: 0 auto;
  background-color: rgba(0, 0, 0, 0.5);
}
.container {
  max-width: 778px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
#information {
  background: none;
}
#purpose {
  background-color: rgba(65, 105, 225, 0.9);
}
#presentation, #pictures, #report {
  background-color: rgba(255, 255, 255, 0.9);
  color: black;
}
#application, #access {
  background-color: rgba(128, 128, 128, 0.9);
}
#program, #link {
  background-color: rgba(0, 191, 255, 0.9);
  color: black;
}
#footer {
  background-color: rgba(245, 245, 245, 0.9);
  color: gray;
  padding: 20px 0;
  margin: 0 auto;
}
.divider {
  width: 50%;
  height: 2px;
  background-color: currentColor;
  margin: 20px 0;
}
.link-button {
  border: 1px solid black;
  background-color: white;
  color: black;
  padding: 10px 20px;
  text-decoration: none;
  border-radius: 10px;
  transition: all 0.3s;
  display: inline-block;
  margin-bottom: 10px;
}
.link-button:hover {
  color: #cc003d;
  text-decoration: underline;
}
.link-button:active {
  color: white;
  background-color: #cc003d;
}
.dl-button {
  border: 1px solid black;
  background-color: white;
  color: black;
  padding: 4px;
  text-decoration: none;
  border-radius: 0px;
  transition: all 0.3s;
  display: inline-block;
  margin-bottom: 10px;
}
.dl-button:hover {
  color: blue;
  text-decoration: underline;
}
/* 太さ3pxのボーダー */
.border-3{
  border-width:3px !important;
}
/* ハンバーガーメニューをクリックしたときに外枠を表示しない */
.navbar-toggler:focus {
  outline: none !important;
}