body {
  font: 16px/1.625 "Open Sans", "Helvetica Neue", "Helvetica", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  color: #656a71;
  margin: 0;
}

#header-overlay {
  background: #131313 50% 100% no-repeat;
  background-size: cover;
  height: 20vh;
  width: 100%;
  opacity: 0;
  -webkit-animation-name: overlay;
          animation-name: overlay;
  -webkit-animation-duration: 5s;
          animation-duration: 5s;
  -webkit-animation-delay: 1s;
          animation-delay: 1s;
  -webkit-animation-fill-mode: forwards;
          animation-fill-mode: forwards;
}

@-webkit-keyframes overlay {
  0% {
    opacity: 0;
  }

  100% {
    opacity: .25;
  }
}

@keyframes overlay {
  0% {
    opacity: 0;
  }

  100% {
    opacity: .25;
  }
}

body.background-1 #header-overlay {
  background-image: url(images/1.jpg);
}

body.background-4 #header-overlay {
  background-image: url(images/1.jpg);
}

#logo {
  display: block;
  background: url(images/b3bp-logo.png) center;
  background-repeat: no-repeat;
  background-size: contain;
  width: 180px;
  height: 120px;
  position: absolute;
  top: 50%;
  left: 50%;
  margin-left: -100px;
  margin-top: -60px;
  -webkit-animation-name: logo;
          animation-name: logo;
  -webkit-animation-duration: 2s;
          animation-duration: 2s;
  -webkit-animation-fill-mode: forwards;
          animation-fill-mode: forwards;
}

@-webkit-keyframes logo {
  0% {
    opacity: 0;
  }

  100% {
    opacity: 1;
  }
}

@keyframes logo {
  0% {
    opacity: 0;
  }

  100% {
    opacity: 1;
  }
}

#more {
  position: absolute;
  bottom: 10px;
  left: 50%;
  margin-left: -6px;
  color: white;
  opacity: 0;
  -webkit-animation-name: move;
          animation-name: move;
  -webkit-animation-duration: 3s;
          animation-duration: 3s;
  -webkit-animation-delay: 3s;
          animation-delay: 3s;
  -webkit-animation-fill-mode: forwards;
          animation-fill-mode: forwards;
  -webkit-animation-timing-function: cubic-bezier(0.86, 0, 0.07, 1);
          animation-timing-function: cubic-bezier(0.86, 0, 0.07, 1);
}

@-webkit-keyframes move {
  0% {
    opacity: 0;
    bottom: 300px;
  }

  50% {
    opacity: 1;
    bottom: 10px;
  }

  90% {
    opacity: 1;
    bottom: 10px;
  }

  100% {
    opacity: 0;
    bottom: -10px;
  }
}

@keyframes move {
  0% {
    opacity: 0;
    bottom: 300px;
  }

  50% {
    opacity: 1;
    bottom: 10px;
  }

  90% {
    opacity: 1;
    bottom: 10px;
  }

  100% {
    opacity: 0;
    bottom: -10px;
  }
}

#content {
  padding: 100px 0;
  max-width: 650px;
  margin: 0 auto;
}

#menu {
  position: fixed;
  top: 35px;
  right: 35px;
  cursor: pointer;
  background: transparent;
  color: black;
  padding: 7px;
  border-radius: 1px;
  line-height: 0;
}

#menu.over-header {
  color: white;
}

#menu i {
  font-size: 19px;
}

#menu:hover #menu-items {
  opacity: 1;
  visibility: visible;
}

#menu-items {
  line-height: 1.7;
  opacity: 0;
  position: fixed;
  visibility: hidden;
  margin: 0;
  padding: 20px;
  font-size: 12px;
  background: white;
  color: #121212;
  top: 67px;
  right: 35px;
  border-radius: 1px;
  text-align: right;
}

#menu-items li a:hover {
  text-decoration: underline;
}

#menu-items li {
  list-style: none;
}

#menu-items li a {
  color: #4C4C4C;
}

h1, h2, h3, h4 {
  font-weight: 600;
  margin-bottom: 0px;
  color: #3b444f;
}

h1      { font-size: 2em;       /* 2*16 = 32 */         }
h2      { font-size: 1.5em;     /* 1.5*16 = 24 */       }
h3      { font-size: 1.17em;    /* 1.17*16 = 18.72 */   }
h4      { font-size: 1em;       /* 1*16 = 16 */         }
h5      { font-size: 0.83em;    /* 0.83*16 = 13.28 */   }
h6      { font-size: 0.75em;    /* 0.75*16 = 12 */      }

h1 {
  /*margin-top: 75px;*/
}

h1::before {
  /*display: block;
  content: ' ';
  border-top: 1px dotted #eee;
  width: 35%;
  margin: 0 auto 75px auto;*/
}

h2 {
  margin-top: 50px;
}

h3 {
  margin-top: 30px;
}

p > code,
li > code {
  border: 1px solid #eee;
  padding: 2px 10px;
  border-radius: 3px;
  font-size: .75rem;
  color: #555;
  white-space: nowrap;
}

header {
  background: #131313;
  position: relative;
}

a {
  text-decoration: none;
  color: #55A1E1;
}

a:hover {
  text-decoration: underline;
}

hr {
  margin: 1px;
  border: none;
  height: 1px;
  /* Set the hr color */
  color: gainsboro; /* old IE */
  background-color: gainsboro; /* Modern Browsers */
}

.Social {
  margin: 0 auto;
  text-align: center;
}
.Social > * {
  display: inline;
  margin: 0;
  padding: 0;
}

.on-the-githubs {
  -webkit-margin-before: 1em;
  -webkit-margin-after: 1em;
}
.on-the-githubs:after {
  content: '';
  display: table;
  clear: both;
}
.on-the-githubs > li {
  list-style-type: none;
  margin: 0;
  padding: 0;
  /*height: 26px;*/
  position: relative;
  border-bottom: 1px solid rgba(gainsboro, 0.3);
  margin-bottom: 10px;
}
.on-the-githubs > li:after {
  content: '';
  display: table;
  clear: both;
}

.on-the-githubs > li p {
  font-size: 15px;
  line-height: 16px;
  margin: 0 2px;
  padding: 0;
  display: inline-block;
  float: left;
  overflow: hidden;
  max-width: 80%;
}
.on-the-githubs > li abbr {
  font-size: 12px;
  line-height: 16px;
  position: absolute;
  right: 0;
  float: left;
  text-align: right;
  /*display: none*/
}
.on-the-githubs > li a {
  font-weight: normal;
  /*text-decoration: underline;*/
}
.on-the-githubs > li img {
  float: left;
  margin: 0 2px 0 0;
  border-radius: 10px;
  width: 18px;
  height: 18px;
}