body {
  font-family: arial, sans-serif;
  font-size: 16px;
}

a {
  cursor: pointer;
}

button {
  box-sizing: border-box;
  font-size: 12px;
  padding: 6px 12px;
  border-radius: 3px;
  border: solid 1px #0096d6;
  background: linear-gradient(#0096d6, #0081b8);
  color: #fff;
}

button:hover,
button:focus,
button:active {
  background: #0081b8;
  border: solid 1px #0081b8;
}

body > section {
  position: relative;
  width: 100%;
  max-width: 62.5em;
  margin: 0 auto;
  padding: 0 1.5em;
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
}

article {
  position: relative;
  margin: 0 auto;
  float: left;
}

h1 {
  border-bottom: solid 1px #b9b8bb;
  padding-bottom: .5em;
}


.tooltip {
  padding: 0.75em 1.5em;
  max-width: 15em;
  font-size: 0.875em;
}

.right-triangle
.left-triangle {
  content: "";
  display: block;
  width: 0;
  height: 0;
  border: inset 1em;
}

.right-triangle {
  border-color: transparent #fff transparent transparent;
  border-right-style: solid;
}