html {
  /* csslint ignore:start */
  /* The nav header is 3.5rem high, plus 20px for the margin-top of the
       main container. */
  scroll-padding-top: calc(3.5rem + 30px);
  /* csslint ignore:end */
}

body {
  margin-top: 40px;
}

body::before {
  content: ' ';
  position: fixed;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  /*background-color: #f8f8f8;*/
  will-change: transform;
  z-index: -1;
}

body > .container {
  margin-top: 20px;
  min-height: 400px;
}

h1[id]:before,
h2[id]:before,
h3[id]:before,
h4[id]:before,
h5[id]:before,
h6[id]:before {
  content: '';
  display: block;
}

h1:hover .headerlink,
h2:hover .headerlink,
h3:hover .headerlink,
h4:hover .headerlink,
h5:hover .headerlink,
h6:hover .headerlink {
  display: inline-block;
}

p > img {
  max-width: 100%;
  height: auto;
}

ul.nav li.first-level {
  font-weight: bold;
}

ul.nav li.third-level {
  padding-left: 12px;
}

div.col-md-3 {
  padding-left: 0;
}

div.col-md-9 {
  padding-bottom: 50px;
}

div.source-links {
  float: right;
}

/*
 * Side navigation
 *
 * Scrollspy and affixed enhanced navigation to highlight sections and secondary
 * sections of docs content.
 */

/* By default it's not affixed in mobile views, so undo that */
.bs-sidebar.affix {
  /*position: -webkit-sticky;*/
  position: static;
}

/*.bs-sidebar.card { !* csslint allow: adjoining-classes *!*/
/*    padding: 0;*/
/*    max-height: 90%;*/
/*    overflow-y: auto;*/
/*}*/

.bs-sidebar.well {
  padding: 0;
}

/* First level of nav */
.bs-sidenav {
  margin-top: 30px;
  margin-bottom: 30px;
  padding-top: 10px;
  padding-bottom: 10px;
  border-radius: 5px;
}

/* All levels of nav */
.bs-sidebar .nav > li > a {
  display: block;
  padding: 5px 20px;
  z-index: 1;
}
.bs-sidebar .nav > li > a:hover,
.bs-sidebar .nav > li > a:focus {
  text-decoration: none;
  border-right: 1px solid;
}
.bs-sidebar .nav > .active > a,
.bs-sidebar .nav > .active:hover > a,
.bs-sidebar .nav > .active:focus > a {
  /* TODO active样式更改，跳转定位不准确 */
  /* font-weight: bold; */
  /* background-color: transparent; */
  /* border-right: 1px solid; */
}

/* Nav: second level (shown on .active) */
.bs-sidebar .nav .nav {
  display: none; /* Hide by default, but at >768px, show it */
  margin-bottom: 8px;
}
.bs-sidebar .nav .nav > li > a {
  padding-top: 3px;
  padding-bottom: 3px;
  padding-left: 30px;
  font-size: 90%;
}

/* Show and affix the side nav when space allows it */
@media (min-width: 992px) {
  .bs-sidebar .nav > .active > ul {
    display: block;
  }
  /* Widen the fixed sidebar */
  .bs-sidebar.affix,
  .bs-sidebar.affix-bottom {
    width: 155px;
  }
  .bs-sidebar.affix {
    position: fixed; /* Undo the static from mobile first approach */
    top: 57px;
  }
  .bs-sidebar.affix-bottom {
    position: absolute; /* Undo the static from mobile first approach */
  }
  .bs-sidebar.affix-bottom .bs-sidenav,
  .bs-sidebar.affix .bs-sidenav {
    margin-top: 0;
    margin-bottom: 0;
  }
}
@media (min-width: 1200px) {
  /* Widen the fixed sidebar again */
  .bs-sidebar.affix-bottom,
  .bs-sidebar.affix {
    width: 200px;
  }
}
@media (min-width: 1600px) {
  /* Widen the fixed sidebar again */
  .bs-sidebar.affix-bottom,
  .bs-sidebar.affix {
    width: 263px;
  }
}

/* Added to support >2 level nav in drop down */

.dropdown-submenu {
  position: relative;
}

.dropdown-submenu > .dropdown-menu {
  top: 0;
  left: 100%;
  margin-top: 0px;
  margin-left: 0px;
  -webkit-border-radius: 0 6px 6px 6px;
  -moz-border-radius: 0 6px 6px;
  border-radius: 0 6px 6px 6px;
}

.dropdown-submenu:hover > .dropdown-menu {
  display: block;
}

.dropdown-submenu > a:after {
  display: block;
  content: ' ';
  float: right;
  width: 0;
  height: 0;
  border-color: transparent;
  border-style: solid;
  border-width: 5px 0 5px 5px;
  border-left-color: #ccc;
  margin-top: 5px;
  margin-right: -10px;
}

.dropdown-submenu:hover > a:after {
  border-left-color: #fff;
}

.dropdown-submenu.pull-left {
  float: none;
}

.dropdown-submenu.pull-left > .dropdown-menu {
  left: -100%;
  margin-left: 00px;
  -webkit-border-radius: 6px 0 6px 6px;
  -moz-border-radius: 6px 0 6px 6px;
  border-radius: 6px 0 6px 6px;
}