div#notebook {
    margin-top:5px;
    margin-bottom:5px;
    max-width:900px;
}
div.cell {
    max-width:60em;
    margin-left:auto;
    margin-right:auto;
}
div.input {
    margin-top:1em;
    margin-bottom:1em;
    margin-right:auto;
    margin-left:10%;
    min-width:540px;
}
div.output_wrapper {
    margin-top:1em;
    margin-bottom:1em;
    margin-left:10%;
    margin-right:auto;
    min-width:540px;
}
div.text_cell {
    margin-top:-2px;
    margin-bottom:-2px;
    padding-top:2px;
    padding-bottom:2px;
    border-collapse:collapse;
    border-top:none;
    border-bottom:none;
}
div.input_prompt {
    border-top: none
}
.prompt {
    min-width: 0px;
    padding: 0px;
}

#notebook {
    background: #eee;
    margin:auto;
}

.footer-col-wrapper {
    font-size:14px;
}

.index-header {
  background-color: #aaaaaa;
  -webkit-background-size: 60%;
  -moz-background-size: 60%;
  background-size: 60%;
  -o-background-size: 60%;
}

.intro-header {
}