body {
    background-color: white;
    margin: 0;
    padding: 0;
    font-family: Verdana, sans;
}

header {
    width: 100%;
    height: 100px;
    margin: 0;
    padding: 0;
    border-bottom: 1px solid black;
}

header h1 {
    font-size: 200%;
    margin: 0;
    padding: 0 0 0 120px;
    position: relative;
    top: 50%;
    transform: translateY(-50%);
}

header #logo {
    float: left;
    width: 100px;
    padding: 0;
    margin: 0;
    text-align: center;
    border-right: 1px solid black;
}

aside {
    width: 100px;
    float: left;
}

section#main {
    margin: 0 0 0 100px;
    padding: 20px;
    border-left: 1px solid black;
    height: 100%;
    max-width: 40em;
}

section#main h1:first-child {
    margin-top: 0;
}

h1 {
    font-size: 160%;
}

h2 {
    font-size: 140%;
}

h3 {
    font-size: 120%;
}

h4, h5, h6 {
    font-size: 100%;
}

.loader {
  font-size: 10px;
  margin: 50px auto;
  text-indent: -9999em;
  width: 11em;
  height: 11em;
  border-radius: 50%;
  background: #ffffff;
  background: -moz-linear-gradient(left, #000 10%, rgba(255, 255, 255, 0) 42%);
  background: -webkit-linear-gradient(left, #000 10%, rgba(255, 255, 255, 0) 42%);
  background: -o-linear-gradient(left, #000 10%, rgba(255, 255, 255, 0) 42%);
  background: -ms-linear-gradient(left, #000 10%, rgba(255, 255, 255, 0) 42%);
  position: relative;
  -webkit-animation: load3 1.4s infinite linear;
  animation: load3 1.4s infinite linear;
  -webkit-transform: translateZ(0);
  -ms-transform: translateZ(0);
  transform: translateZ(0);
}

.loader:after {
  background: #fff;
  width: 75%;
  height: 75%;
  border-radius: 50%;
  content: '';
  margin: auto;
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
}

@-webkit-keyframes load3 {
  0% {
    -webkit-transform: rotate(0deg);
    transform: rotate(0deg);
  }
  100% {
    -webkit-transform: rotate(360deg);
    transform: rotate(360deg);
  }
}

@keyframes load3 {
  0% {
    -webkit-transform: rotate(0deg);
    transform: rotate(0deg);
  }
  100% {
    -webkit-transform: rotate(360deg);
    transform: rotate(360deg);
  }
}