body {
  background: #21252b;
  margin: 0;
  padding: 0;
  font-family: "Source Sans Pro", sans-serif;
  color: #333;
}

header {
  width: 100%;
  padding: 20px 0;
  background: #efefef !important;
  border-bottom: 1px solid #a2a2a2;
  /* animation magic */
  transition: all 0.4s ease-in-out;
  -webkit-transition: all 0.4s ease-in-out;
  -moz-transition: all 0.4s ease-in-out;
  z-index: 9999;
  top: 0;
  position: fixed;
}

header h1 {
  font-size: 20px;
  text-indent: 40px;
  font-weight: bold;
}

.container {
  width: 52%;
  margin: 140px auto;
}

.shrink {
  padding: 10px 0;
}
.bum {
  display: none;
}

.hidden {
  background-color: #fff00e !important;
}

strong {
  font-weight: bold;
}