body {
  margin: 0;
  padding: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

a {
  text-decoration: none;
  color: #091F3F;
  border-bottom: thin dotted #091F3F;
}

a:hover {
  color: #DF1E36;
  border-color: #DF1E36;
}

header {
  z-index: 1;
  position: fixed;
  background-color: #333;
  color: #fff;
  width: 100%;
  top: 0;
  left: 0;
  height: 2rem;
  padding: .25rem .5rem;
  box-sizing: border-box;
  display: flex;
  justify-content: flex-start;
  align-items: center;
  box-shadow:
    0 1px 3px rgba(0, 0, 0, .05),
    0 2px 6px rgba(0, 0, 0, .1),
    0 3px 12px rgba(0, 0, 0, .15);
}

header img {
  height: 1rem;
  margin-right: .5rem;
}

header a {
  outline: none;
  text-decoration: none;
  border: none;
}

header h1 {
  font-size: .8rem;
  margin: 0;
  padding: 0;
}

h2 {
  font-size: 2rem;
  margin: 2rem 0 1rem 0;
  padding: 0;
}

h3 {
  font-size: 1.5rem;
  padding-top: 2rem;
}

nav h3 {
  font-weight: 500;
  padding: 0;
  margin: 0 0 .5rem 0;
  font-size: 1rem;
}

nav h3 a {
  background: none;
  border-bottom-style: dotted;
  border-bottom-width: thin;
  border-bottom-width: thin;
}

nav h3 a:hover {
  background: none;
}

header h1 a {
  color: #fff;
  text-decoration: none;
}

nav {
  position: fixed;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  left: 0;
  top: 2rem;
  bottom: 0;
  overflow: auto;
  width: 100vw;
  background-color: #eee;
  color: #333;
  padding-bottom: 2rem;
  box-sizing: border-box;
  padding: 1rem;
}

nav section {
  width: 100%;
}

nav ul {
  padding: 0 0 0 1.5rem;
  margin: 0 0 1.5rem 0;
  list-style-type: none;
}

nav li {
  padding: .5rem 0;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  width: 100%;
  box-sizing: border-box;
}

nav li a {
  box-sizing: border-box;
  color: #00d;
  text-decoration: none;
  display: inline-block;
  border: none;
  padding: 0;
  font-weight: normal;
  font-size: 1rem;
  text-transform: none;
  flex: 1;
}
nav li li a {
  padding: .25rem .5rem .25rem 2.5rem;
}
nav li li li a {
  padding: .25rem .5rem .25rem 4rem;
}

nav a:last-child:hover {
  color: #DF1E36;
  background-color: rgba(0, 0, 0, .1);
}

nav li a:last-child:not(:first-child) {
  font-size: .8rem;
  width: 100%;
  text-align: right;
  flex: 0;
  padding: .25rem;
  font-family: monospace;
}

main {
  margin-left: 0;
  margin-top: 2rem;
  padding: 0 1rem;
  min-height: initial;
  position: relative;
}

@media (min-width: 48rem) {
  nav {
    display: block;
    width: 33vw;
  }

  main {
    margin-left: 33vw;
  }
}

iframe, object {
  width: calc(100% + 2rem);
  margin: 0 -1rem;
  height: calc(100vh - 2.3rem);
  box-sizing: border-box;
  border: none;
}

code {
  padding: .1rem .2rem;
  font-family: Source Code Pro, monospace;
  border-radius: 2px;
  line-height: 1.5;
}

.code-block {
  display: block;
  margin: .5rem 1rem;
  padding: .5rem 1rem;
  border-left: .25rem solid #DF1E36;
}

.code-pre {
  white-space: pre;
}

blockquote, .warn, .critical, .error, .info, .highlight {
  border-left-width: .25rem;
  border-left-style: solid;
  padding: 1rem;
  border-radius: 2px;
  margin: 2rem 1rem;
}

blockquote {
  background-color: #f8f8f8;
  border-color: #ddd;
}

.warn {
  background-color: rgba(255, 185, 0, .2);
  border-color: #FFB900;
}

.critical, .error {
  background-color: rgba(255, 51, 51, .2);
  border-color: #FF4343;
}

.info {
  background-color: rgba(0, 120, 215, .2);
  border-color: #0078D7;
}


.highlight {
  background-color: rgba(16, 114, 16, .2);
  border-color: #107C10;
}

.loading-overlay {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  min-height: calc(100vh - 2.3rem);
  background-color: rgba(255, 255, 255, .8);
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  color: #333;
}

.loading-overlay > div {
  display: flex;
  flex-direction: row;
}

.loading-overlay span {
  font-size: 1.5rem;
  font-weight: bold;
}

.loading-overlay span::after {
  content: '';
  display: inline-block;
  width: 0;
  overflow: visible;
  -webkit-animation: loading-ellipsis 3s infinite linear both;
          animation: loading-ellipsis 3s infinite linear both;
}

@keyframes loading-ellipsis {
  0%, 25% {
    content: '';
  }
  26%, 50% {
    content: '.';
  }
  51%, 75% {
    content: '..';
  }
  76%, 100% {
    content: '...';
  }
}

/* https://github.com/tobiasahlin/SpinKit */

.sk-folding-cube {
  margin: 20px auto;
  width: 40px;
  height: 40px;
  position: relative;
}

.sk-folding-cube.sk-blue {
  left: 16px;
  top: -4px;
  -webkit-transform: rotateZ(-45deg);
          transform: rotateZ(-45deg);
}

.sk-folding-cube.sk-red {
  right: 15px;
  top: 4px;
  -webkit-transform: rotateZ(135deg);
          transform: rotateZ(135deg);
}

.sk-folding-cube .sk-cube {
  position: relative;
  -webkit-transform: scale(1.1);
      -ms-transform: scale(1.1);
          transform: scale(1.1);
}

.sk-folding-cube.sk-red .sk-cube::before {
  background-color: rgb(223,30,54);
}

.sk-folding-cube.sk-blue .sk-cube::before {
  background-color: rgb(9,31,63);
}

.sk-folding-cube .sk-cube:before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  -webkit-animation: sk-foldCubeAngle 3s infinite linear both;
          animation: sk-foldCubeAngle 3s infinite linear both;
  -webkit-transform-origin: 100% 100%;
      -ms-transform-origin: 100% 100%;
          transform-origin: 100% 100%;
}

.sk-folding-cube .sk-cube1 {
  width: 25%;
  height: 25%;
  -webkit-transform: scale(1.1) rotateZ(270deg);
          transform: scale(1.1) rotateZ(270deg);
  top: 26px;
}
.sk-folding-cube .sk-cube2 {
  width: 25%;
  height: 50%;
  -webkit-transform: scale(1.1);
  transform: scale(1.1);
  left: 0;
  top: -5px;
}
.sk-folding-cube .sk-cube3 {
  width: 50%;
  height: 50%;
  -webkit-transform: scale(1.1) rotateZ(90deg);
          transform: scale(1.1) rotateZ(90deg);
  top: -25px;
  left: 10px;
}

.sk-folding-cube.sk-blue .sk-cube2:before {
  -webkit-animation-delay: .2s;
          animation-delay: .2s;
}
.sk-folding-cube.sk-blue .sk-cube2:before {
  -webkit-animation-delay: .4s;
          animation-delay: .4s;
}
.sk-folding-cube.sk-blue .sk-cube3:before {
  -webkit-animation-delay: .6s;
          animation-delay: .6s;
}
.sk-folding-cube.sk-red .sk-cube1:before {
  -webkit-animation-delay: 1.4s;
          animation-delay: 1.4s;
}
.sk-folding-cube.sk-red .sk-cube2:before {
  -webkit-animation-delay: 1.2s;
          animation-delay: 1.2s;
}
.sk-folding-cube.sk-red .sk-cube3:before {
  -webkit-animation-delay: 1s;
          animation-delay: 1s;
}

@-webkit-keyframes sk-foldCubeAngle {
  0%, 10% {
    opacity: 0;
  } 30%, 70% {
    opacity: 1;
  } 80%, 100% {
    opacity: 0;
  }
}

@keyframes sk-foldCubeAngle {
  0%, 10% {
    opacity: 0;
  } 30%, 70% {
    opacity: 1;
  } 80%, 100% {
    opacity: 0;
  }
}