Misago/misago/admin/src/style/admin-error.scss

// Admin error pages

// Add fancy shadow and red outline to card
.card-admin-error {
  @extend .border-danger;
  @extend .shadow-sm;
}

// Make card header border also danger
.card-admin-error .card-header {
  @extend .border-danger;
}

// Errored login form
.login-error {
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-error-container {
  width: 100%;
  padding: $grid-gutter-width;
}

.login-error-card {
  @extend .border-danger;
  @extend .shadow-sm;

  max-width: 540px;
  margin: 0 auto;
}

.login-error-title {
  font-size: $font-size-lg;
  text-align: center;
}