body {
  background-repeat: no-repeat;
  background-attachment: fixed;
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
  background-position: center center;
  width: 100vw;
  height: 100vh;
  position: relative;
}
#main-content {
  min-height: calc(100% - 50px);
  margin: 0;
}
input.form-control,
label.checkbox span,
div.g-recaptcha {
  margin-bottom: 10px;
}
button[type="submit"].wrong {
  animation: shake 0.5s;
}
#l10n-select {
  position: absolute;
  right: 45px;
  top: 30px;
}
@keyframes shake {
  10%,
  90% {
    transform: translate(-1px,0);
  }
  20%,
  80% {
    transform: translate(2px,0);
  }
  30%,
  50%,
  70% {
    transform: translate(-4px,0);
  }
  40%,
  60% {
    transform: translate(4px,0);
  }
}
.loading-spinner {
  position: fixed;
  max-height: 50%;
  max-width: 50%;
  z-index: 1;
  border: 10px solid #f3f3f3;
  border-top: 10px solid #3497DB;
  border-radius: 50%;
  width: 125px;
  height: 125px;
  top: calc(50% -  62.5px  - 80px);
  left: calc(50% -  62.5px);
  animation: spin 2s linear infinite;
  -webkit-animation: spin 2s linear infinite;
  -moz-animation: spin 2s linear infinite;
}
.loading-spinner img {
  max-width: 100%;
  max-height: 100%;
}
@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}