* {
  box-sizing: border-box;
}

a {
  color: #ff0000;
  text-decoration: none;
}

a:hover {
  color: #9900ff;
}

body {
  background: #000000;
  font-family: Arial, Helvetica, sans-serif;
  color: #88bbff;
  font-size: 13px;
  margin: 10px 0;
  line-height: 1.5em;
}

.master {
  margin: 0 auto;
  max-width: 800px;
}

.nav {
  display: inline-block;
  width: 110px;
  margin: 10px 0px 0px 10px;
  vertical-align: top;
}

.nav_text {
  margin: 10px 0px 0px 10px;
}

.content {
  display: inline-block;
  margin: 10px 10px 0 30px;
  width: calc(100% - 170px);
  vertical-align: top;
}

.centered {
  text-align: center;
}