.block {
  width: 50px;
  height: 50px;
  background: red;
}

.hero {
  position: relative;
  margin: auto;
  text-align: center;
  -webkit-transform: translateZ(1000px);
}
.hero h1 {
  position: relative;
  display: inline-block;
  text-align: center;
  font-size: 6rem;
  margin-bottom: 0px;
}
.hero h1 span {
  display: inline-block;
}

.hero p {
  text-align: center;
  font-style: italic;
}
.hero h3 i {
  margin-right: 20px;
}

.warning {
  text-align: center;
  color: red;
}

.nav.docked {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1;
  background: white;
  padding: 0;
  margin: 0;
  /* Safari z-index issues */
  -webkit-transform: translateZ(2000px);
}

.nav.docked ul {
  margin-left: 14px;
  margin-bottom: 10px;
}

.nav {
  overflow: auto;
  border-top: 1px solid #aaa;
  border-bottom: 1px solid #aaa;
  padding-top: 1rem;
  padding-left: 10px;
  margin-top: 5%;
}
.nav ul {
  list-style: none;
}
.nav ul li {
  float: left;
  margin-right: 20px;
}
.nav ul li a {
  text-decoration: none;
  text-transform: uppercase;
  color: black;
    font-weight: bold;
}
.hidden {
  display: none;
}

pre {
  margin: 0;
}

section {
  padding-top: 45px;
}

table {
  width: 100%;
}
table thead td {
  font-weight: bold;
}

footer {
  background: rgb(0, 43, 54);
  color: white;
  padding-top: 10px;
}

.easing-demo {
  position: relative;
  height: 20px;
  border: 1px solid grey;
  border-radius: 4px;
  box-sizing: border-box;
}
.easing-demo div {
  position: absolute;
  width: 20px;
  height: 20px;
  border-radius: 4px;
  background: rgb(30, 174, 219);
}

.flip-container {
  margin-bottom: 20px;
  width: 200px;
  height: 50px;
  position: relative;
  -webkit-perspective-origin: 50% 50%;
  -webkit-perspective: 800px;
  perspective-origin: 50% 50%;
  perspective: 800px;
  cursor: ew-resize;

  /* No text selection */
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -khtml-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

.flip-container > div {
  position: absolute;
}

.flipper-background {
  line-height: 50px;
  text-align: center;
  width: 100px;
  height: 50px;
  background: gainsboro;
}

.flipper {
  position: relative;
  perspective: 1000px;
  -webkit-transform-style: preserve-3d;
  transform-style: preserve-3d;
  width: 100px;
  height: 50px;
}

.flipper > div {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  background: rgb(51, 195, 240);
  color: white;
  line-height: 50px;
  text-align: center;

}
.flipper .flipper-front {
  z-index: 2;
  -webkit-transform: rotateY(0deg);
  transform: rotateY(0deg);
}
.flipper .flipper-back {
  z-index: 1;
  -webkit-transform: rotateY(-180deg);
  transform: rotateY(-180deg);
}

.sequence-example {
  display: inline-block;
  width: 50px;
  height: 50px;
  background: brown;
}

.multi-container {
  position: relative;
  height: 50px;
}
.multi-example {
  display: inline-block;
  width: 50px;
  height: 50px;
  background: brown;
}

#multi-example span {
  display: inline-block;
}

/* Some utiliy classes */
@media screen and (max-width:600px) {
  .hide-mobile {
    display: none;
  }
}

@media screen and (min-width:600px) {
  .hide-desktop {
    display: none;
  }
}

.extra-top-margin {
  margin-top: 20px;
}

.shell-command {
  text-align: center;
}

.shell-command code {
  display: inline-block;
}