body,
html {
  margin: 0;
  padding: 0;
  height: 100%;
  overflow: hidden;
}

body {
  margin-top: 100px;
  background-color: #343A40;
  color: #fff;
  text-align: center;
  font-family: sans-serif;
}

h1 {
  font: 2em sans-serif;
  margin-bottom: 40px;
}

.message {
    display: flex;
    align-items: center;
    flex-direction: column;
}

.message[style*='display: block']{
    display: flex !important;
}

#content {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  top: 0px;
}

p {
    max-width: 300px;
}

strong {
    color: #cc0000;
}

#loading {
  display: inline-block;
  width: 50px;
  height: 50px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: #fff;
  animation: spin 1s ease-in-out infinite;
  -webkit-animation: spin 1s ease-in-out infinite;
}

.display-none {
  display: none;
}

@keyframes spin {
  to {
    -webkit-transform: rotate(360deg);
  }
}
@-webkit-keyframes spin {
  to {
    -webkit-transform: rotate(360deg);
  }
}

.logo {
  position: relative;
  display: inline-block;
}

.logo div {
  float: right;
  margin: 15px;
  font-size: 24px;
}