base.css

body {
    padding-top: 70px;
}

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

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

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 {
  overflow-y: scroll;
  max-height: 86%;
  overflow-x: hidden;
}

.bs-sidebar.affix {
    position: static;
}

.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;
}
.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 {
    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: 213px;
    }
    .bs-sidebar.affix {
        position: fixed; /* Undo the static from mobile first approach */
        top: 80px;
    }
    .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: 263px;
    }
}

#carbonads {
  --width: 180px;
  --font-size: 14px;
}

#carbonads {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", Helvetica, Arial, sans-serif;
  display: block;
  overflow: hidden;
  margin-bottom: 20px;
  max-width: var(--width);
  border-radius: 4px;
  text-align: center;
  box-shadow: 0 0 0 1px hsla(0, 0%, 0%, .1);
  background-color: hsl(0, 0%, 98%);
  font-size: var(--font-size);
  line-height: 1.5;
}

#carbonads a {
  color: inherit;
  text-decoration: none;
}

#carbonads a:hover {
  color: inherit;
}

#carbonads span {
  position: relative;
  display: block;
  overflow: hidden;
}

.carbon-img {
  display: block;
  margin-bottom: 8px;
  max-width: var(--width);
  line-height: 1;
}

.carbon-img img {
  display: block;
  margin: 0 auto;
  max-width: var(--width) !important;
  width: var(--width);
  height: auto;
}

.carbon-text {
  display: block;
  padding: 0 1em 8px;
}

.carbon-poweredby {
  display: block;
  padding: 10px var(--font-size);
  background: repeating-linear-gradient(-45deg, transparent, transparent 5px, hsla(0, 0%, 0%, .025) 5px, hsla(0, 0%, 0%, .025) 10px) hsla(203, 11%, 95%, .4);
  text-transform: uppercase;
  letter-spacing: .5px;
  font-weight: 600;
  font-size: 9px;
  line-height: 0;
}

@media only screen and (min-width: 320px) and (max-width: 759px) {
  #carbonads {
    float: none;
    margin: 0 auto;
    max-width: 330px;
  }
  #carbonads span {
    position: relative;
  }
  #carbonads > span {
    max-width: none;
  }
  .carbon-img {
    float: left;
    margin: 0;
  }

  .carbon-img img {
    max-width: 130px !important;
  }
  .carbon-text {
    float: left;
    margin-bottom: 0;
    padding: 8px 20px;
    text-align: left;
    max-width: calc(100% - 130px - 3em);
  }
  .carbon-poweredby {
    left: 130px;
    bottom: 0;
    display: block;
    width: 100%;
  }
}