@charset "UTF-8";

html {
  color: #4d4d4d;
  font-family: 'ヒラギノ角ゴ Pro W3', 'Hiragino Kaku Gothic Pro', 'メイリオ', Meiryo, sans-serif;
  font-size: 16px;
  line-height: 1.8;
}
html,
body {
  height: 100%;
  margin: 0;
}
a {
  color: #0066ff;
  text-decoration: none;
  &:hover {
    color: #0047b2;
    text-decoration: underline;
  }
}
button:focus {
  outline: none;
}
.main {
  display: flex;
  flex-direction: column;
  height: 100%;
}
.page-header {
  margin-bottom: 40px;
}
.header {
  top: 0;
  left: 0;
  z-index: 20;
  position: fixed;
  padding: 0 10px;
  display: grid;
  grid-template-columns: 1fr 3fr 1fr;
  grid-template-rows: 40px;
  width: 100%;
  height: 40px;
  color: #ffffff;
  box-sizing: border-box;
  background-color: #0f396e;
  .logo {
    padding: 9px 0;
    height: 30px;
  }
  .page-title {
    padding: 5px 0;
    height: 30px;
    text-align: center;
  }
  .site-navigations {
    padding: 5px 0;
    height: 30px;
    text-align: right;
  }
}
.site-tree {
  transition: visibility 0.3s, opacity 0.3s;
  visibility: hidden;
  opacity: 0;
  position: fixed;
  background-color: rgba(0, 0, 0, 0.1);
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  justify-items: center;
  align-items: center;
  z-index: 30;
  user-select: none;
  ul {
    list-style: none;
  }
  & > ul {
    padding: 30px;
    background-color: #ffffff;
    margin: 0 auto;
    display: inline-flex;
    flex-direction: column;
    width: 600px;
    height: 80vh;
    overflow: scroll;
  }
  li > ul {
    padding-left: 10px;
  }
}