.masthead {
  background-color: #24292e;
  color: white;
}

.greedy-nav {
  background-color: #24292e;
}

#main a, #main a:visited {
  color: black;
}

#main a:hover {
  color: #33A;
}

iframe.slideshare {
  display: block;
  border:1px solid #CCC;
  max-width: 100%;
  margin: 0 auto 1.3em;
}

figure figcaption {
  display: block;
  width: 100%;
  text-align: center;
}

figure a {
  margin: 0 auto;
}

figure figcaption :last-child {
  margin-bottom: 0;
}

blockquote p:last-child {
  margin-bottom: 0;
}

.speech-bubble {
  position: relative;
  padding: 15px;
  margin: 2em 1em 2em 0;
  color: #000;
  background: #E3F0FF;
  background: linear-gradient(top, #C0D0F0, #E3F0FF);
  border-radius: 10px;
  border:3px solid #C0D0F0;
}

.speech-bubble + .speech-bubble {
  margin-top: -1em;
}

.speech-bubble:before {
  content: "";
  display: block; /* reduce the damage in FF3.0 */
  position: absolute;
  width: 0;
  border-style: solid;
}

.speech-bubble:after {
  content: "";
  display: block; /* reduce the damage in FF3.0 */
  position: absolute;
  width: 0;
  border-style: solid;
}

.speech-bubble.left {
  margin-left: 30px;
  margin-right: 10%;
}

.speech-bubble.left:before {
  top: 13px;
  left: -30px;
  border-width: 12px 30px 12px 0;
  border-color: transparent #C0D0F0;
}

.speech-bubble.left:after {
  top: 17px;
  left: -21px;
  border-width: 8px 21px 8px 0;
  border-color: transparent #E3F0FF;
}

.speech-bubble.right {
  margin-left: 10%;
  margin-right: 30px;
}

.speech-bubble.right:before {
  top: 13px;
  right: -30px;
  border-width: 12px 0 12px 30px;
  border-color: transparent #C0D0F0;
}

.speech-bubble.right:after {
  top: 17px;
  right: -21px;
  border-width: 8px 0 8px 21px;
  border-color: transparent #E3F0FF;
}