bootstrap.css

/*!
 * Bootstrap v4.0.0-alpha (http://getbootstrap.com)
 * Copyright 2011-2015 Twitter, Inc.
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 */

/*! normalize.css v3.0.2 | MIT License | git.io/normalize */
html {
  font-family: sans-serif;
  -webkit-text-size-adjust: 100%; 
      -ms-text-size-adjust: 100%;
}

body {
  margin: 0;
}

article,
aside,
details,
figcaption,
figure,
footer,
header,
hgroup,
main,
menu,
nav,
section,
summary {
  display: block;
}

audio,
canvas,
progress,
video {
  display: inline-block;
  vertical-align: baseline;
}

audio:not([controls]) {
  display: none;
  height: 0;
}

[hidden],
template {
  display: none;
}

a {
  background-color: transparent;
}

a:active {
  outline: 0;
}

a:hover {
  outline: 0;
}

abbr[title] {
  border-bottom: 1px dotted;
}

b,
strong {
  font-weight: bold;