@charset "UTF-8";
.quiz-container {
  max-width: 750px;
  margin: 2.5rem auto;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  color: #2c3e50; }
  @media (max-width: 768px) {
    .quiz-container {
      max-width: calc(100% - 1rem);
      margin: 1rem auto; } }
.dark-mode .quiz-container {
  color: #e8e8e8; }

.quiz-start-card {
  background-color: #ffffff;
  border: 1px solid #e0e0e0;
  border-radius: 12px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  overflow: hidden;
  transition: box-shadow 250ms cubic-bezier(0.4, 0, 0.2, 1); }
  .quiz-start-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08), 0 2px 4px rgba(0, 0, 0, 0.05); }

.dark-mode .quiz-start-card {
  background-color: #2d2d2d;
  border-color: #404040;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2); }
  .dark-mode .quiz-start-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4), 0 2px 4px rgba(0, 0, 0, 0.3); }

.quiz-start-header {
  padding: 2rem 2.5rem;
  text-align: center; }
  @media (max-width: 768px) {
    .quiz-start-header {
      padding: 1.25rem 1.25rem; } }
  @media (max-width: 480px) {
    .quiz-start-header {
      padding: 1rem 1rem; } }
.quiz-start-title {
  margin: 0 0 0.75rem 0;
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.3;
  color: #2c3e50;
  letter-spacing: -0.01em; }
  @media (max-width: 768px) {
    .quiz-start-title {
      font-size: 1.25rem; } }
.dark-mode .quiz-start-title {
  color: #e8e8e8; }

.quiz-start-description {
  margin: 0;
  font-size: 1rem;
  color: #7f8c8d;
  line-height: 1.6; }
  @media (max-width: 768px) {
    .quiz-start-description {
      font-size: 0.95rem; } }
.dark-mode .quiz-start-description {
  color: #a0a0a0; }

.quiz-start-button {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  width: 100%;
  padding: 1.25rem 2rem;
  background: linear-gradient(135deg, #1976d2 0%, #1669bb 100%);
  color: white;
  border: none;
  border-radius: 0 0 12px 12px;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 250ms cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: inset 0 -1px 0 rgba(0, 0, 0, 0.1); }
  .quiz-start-button svg {
    transition: transform 250ms cubic-bezier(0.4, 0, 0.2, 1); }
  .quiz-start-button:hover {
    background: linear-gradient(135deg, #1669bb 0%, #1562ae 100%);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(25, 118, 210, 0.3), inset 0 -1px 0 rgba(0, 0, 0, 0.1); }
    .quiz-start-button:hover svg {
      transform: translateX(3px); }
  .quiz-start-button:active {
    transform: translateY(0);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.2); }
  .quiz-start-button:focus-visible {
    outline: 3px solid #1976d2;
    outline-offset: 2px; }
  @media (max-width: 768px) {
    .quiz-start-button {
      padding: 0.875rem 1.25rem;
      font-size: 1rem; } }
  @media (max-width: 480px) {
    .quiz-start-button {
      padding: 0.75rem 1rem;
      font-size: 0.95rem; } }
.dark-mode .quiz-start-button {
  background: linear-gradient(135deg, #42a5f5 0%, #2a99f4 100%); }
  .dark-mode .quiz-start-button:hover {
    background: linear-gradient(135deg, #5ab1f6 0%, #42a5f5 100%);
    box-shadow: 0 4px 12px rgba(66, 165, 245, 0.3), inset 0 -1px 0 rgba(0, 0, 0, 0.1); }
  .dark-mode .quiz-start-button:focus-visible {
    outline-color: #42a5f5; }

.quiz-loading {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 4rem 2rem;
  background-color: #ffffff;
  border: 1px solid #e0e0e0;
  border-radius: 12px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04); }
  .quiz-loading .spinner-border {
    color: #1976d2;
    width: 3rem;
    height: 3rem;
    border-width: 3px; }
  .quiz-loading p {
    margin: 1.5rem 0 0 0;
    color: #7f8c8d;
    font-size: 0.95rem;
    font-weight: 500; }

.dark-mode .quiz-loading {
  background-color: #2d2d2d;
  border-color: #404040;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2); }
  .dark-mode .quiz-loading .spinner-border {
    color: #42a5f5; }
  .dark-mode .quiz-loading p {
    color: #a0a0a0; }

.quiz-card {
  display: flex;
  flex-direction: column;
  background-color: #ffffff;
  border: 1px solid #e0e0e0;
  border-radius: 12px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  overflow: hidden;
  transition: box-shadow 250ms cubic-bezier(0.4, 0, 0.2, 1); }

.dark-mode .quiz-card {
  background-color: #2d2d2d;
  border-color: #404040;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2); }

.quiz-header {
  padding: 2.5rem 2.5rem 2rem;
  border-bottom: 2px solid #e0e0e0;
  background: linear-gradient(to bottom, #ffffff 0%, #fafafa 100%); }
  .quiz-header .quiz-title {
    margin: 0 0 0.75rem 0;
    font-size: 1.75rem;
    font-weight: 700;
    line-height: 1.3;
    color: #2c3e50;
    letter-spacing: -0.02em; }
  .quiz-header .quiz-description {
    margin: 0;
    font-size: 1rem;
    color: #7f8c8d;
    line-height: 1.6;
    font-weight: 400; }

.dark-mode .quiz-header {
  border-bottom-color: #404040;
  background: linear-gradient(to bottom, #2d2d2d 0%, #383838 100%); }
  .dark-mode .quiz-header .quiz-title {
    color: #e8e8e8; }
  .dark-mode .quiz-header .quiz-description {
    color: #a0a0a0; }

.quiz-progress-container {
  padding: 1.5rem 2.5rem;
  background-color: #fafafa;
  border-bottom: 1px solid #e0e0e0; }
  .quiz-progress-container .quiz-progress-text {
    margin: 0 0 1rem 0;
    font-size: 0.875rem;
    color: #7f8c8d;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em; }
  .quiz-progress-container .progress {
    height: 8px;
    background-color: #e0e0e0;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.1); }
    .quiz-progress-container .progress .progress-bar {
      background: linear-gradient(90deg, #1976d2 0%, #378fe7 100%);
      transition: width 250ms cubic-bezier(0.4, 0, 0.2, 1);
      box-shadow: 0 1px 3px rgba(25, 118, 210, 0.3); }

.dark-mode .quiz-progress-container {
  background-color: #383838;
  border-bottom-color: #404040; }
  .dark-mode .quiz-progress-container .quiz-progress-text {
    color: #a0a0a0; }
  .dark-mode .quiz-progress-container .progress {
    background-color: #404040;
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.3); }
    .dark-mode .quiz-progress-container .progress .progress-bar {
      background: linear-gradient(90deg, #42a5f5 0%, #72bcf8 100%);
      box-shadow: 0 1px 3px rgba(66, 165, 245, 0.4); }

.quiz-body {
  flex: 1 1 auto;
  padding: 2.5rem;
  background-color: #ffffff; }

.dark-mode .quiz-body {
  background-color: #2d2d2d; }

.quiz-question {
  margin: 0 0 2rem 0 !important;
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.5;
  color: #2c3e50;
  letter-spacing: -0.01em; }
  .quiz-question .quiz-question-hint {
    display: inline-block;
    margin-left: 0.5rem;
    padding: 0.25rem 0.625rem;
    background-color: #1976d2;
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 4px;
    vertical-align: middle;
    text-transform: uppercase;
    letter-spacing: 0.03em; }

.dark-mode .quiz-question {
  color: #e8e8e8; }
  .dark-mode .quiz-question .quiz-question-hint {
    background-color: #42a5f5;
    color: #2d2d2d; }

.quiz-options {
  list-style: none;
  margin: 0;
  padding: 0 !important;
  display: flex;
  flex-direction: column;
  gap: 1rem; }

.quiz-option {
  position: relative;
  display: flex;
  align-items: flex-start;
  margin: 0;
  padding: 0; }
  .quiz-option input[type="radio"],
  .quiz-option input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    width: 100%;
    height: 100%;
    margin: 0;
    z-index: 1; }
    .quiz-option input[type="radio"]:checked + .option-label,
    .quiz-option input[type="checkbox"]:checked + .option-label {
      background-color: #e3f2fd;
      border-color: #2196f3;
      box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.1); }
      .quiz-option input[type="radio"]:checked + .option-label .option-letter,
      .quiz-option input[type="checkbox"]:checked + .option-label .option-letter {
        background-color: #2196f3;
        color: white;
        font-weight: 700; }
    .quiz-option input[type="radio"]:focus + .option-label,
    .quiz-option input[type="checkbox"]:focus + .option-label {
      outline: 2px solid #1976d2;
      outline-offset: 2px; }
    .quiz-option input[type="radio"]:disabled + .option-label,
    .quiz-option input[type="checkbox"]:disabled + .option-label {
      opacity: 0.6;
      cursor: not-allowed; }

.dark-mode .quiz-option input[type="radio"]:checked + .option-label,
.dark-mode .quiz-option input[type="checkbox"]:checked + .option-label {
  background-color: #1e3a5f;
  border-color: #42a5f5;
  box-shadow: 0 0 0 3px rgba(66, 165, 245, 0.15); }
  .dark-mode .quiz-option input[type="radio"]:checked + .option-label .option-letter,
  .dark-mode .quiz-option input[type="checkbox"]:checked + .option-label .option-letter {
    background-color: #42a5f5;
    color: #2d2d2d;
    font-weight: 700; }

.dark-mode .quiz-option input[type="radio"]:focus + .option-label,
.dark-mode .quiz-option input[type="checkbox"]:focus + .option-label {
  outline-color: #42a5f5; }

.option-label {
  flex: 1;
  display: flex;
  align-items: center;
  padding: 1.25rem 1.5rem;
  background-color: #ffffff;
  border: 2px solid #e0e0e0;
  border-radius: 10px;
  cursor: pointer;
  transition: all 250ms cubic-bezier(0.4, 0, 0.2, 1);
  font-weight: 500;
  color: #2c3e50;
  font-size: 1rem;
  line-height: 1.5; }
  .option-label:hover {
    background-color: #f8f9fa;
    border-color: #c7c7c7;
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08); }

.dark-mode .option-label {
  background-color: #2d2d2d;
  border-color: #404040;
  color: #e8e8e8; }
  .dark-mode .option-label:hover {
    background-color: #3a3a3a;
    border-color: #5a5a5a;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3); }

.option-letter {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  min-width: 36px;
  margin-right: 1.25rem;
  background-color: #f5f5f5;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.95rem;
  color: #2c3e50;
  transition: all 250ms cubic-bezier(0.4, 0, 0.2, 1); }

.dark-mode .option-letter {
  background-color: #383838;
  color: #e8e8e8; }

.answer-feedback {
  margin-top: 1.5rem;
  padding: 1.25rem 1.5rem;
  border-radius: 10px;
  font-size: 0.95rem;
  line-height: 1.6;
  border: 2px solid transparent; }
  .answer-feedback.correct {
    background-color: #e8f5e9;
    color: #2e7d32;
    border-color: #4caf50; }
    .answer-feedback.correct::before {
      content: "✓ ";
      font-weight: 700;
      font-size: 1.1rem;
      margin-right: 0.5rem; }
  .answer-feedback.incorrect {
    background-color: #ffebee;
    color: #c62828;
    border-color: #ef5350; }
    .answer-feedback.incorrect::before {
      content: "✗ ";
      font-weight: 700;
      font-size: 1.1rem;
      margin-right: 0.5rem; }

.dark-mode .answer-feedback.correct {
  background-color: #1b5e20;
  color: #a5d6a7;
  border-color: #66bb6a; }

.dark-mode .answer-feedback.incorrect {
  background-color: #b71c1c;
  color: #ef9a9a;
  border-color: #e57373; }

.quiz-buttons {
  display: flex;
  gap: 1rem;
  margin-top: 2.5rem;
  justify-content: flex-end; }
  .quiz-buttons.has-prev {
    justify-content: space-between; }
  .quiz-buttons.single-action {
    justify-content: flex-end; }
  @media (max-width: 480px) {
    .quiz-buttons {
      flex-direction: column; } }
.quiz-button {
  flex: 1;
  padding: 1rem 2rem;
  border: 2px solid transparent;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 250ms cubic-bezier(0.4, 0, 0.2, 1);
  text-align: center;
  letter-spacing: 0.01em; }
  .quiz-button.btn-primary {
    background: linear-gradient(135deg, #1976d2 0%, #1669bb 100%);
    color: white;
    box-shadow: 0 2px 8px rgba(25, 118, 210, 0.3); }
    .quiz-button.btn-primary:hover:not(:disabled) {
      background: linear-gradient(135deg, #1669bb 0%, #1562ae 100%);
      transform: translateY(-2px);
      box-shadow: 0 4px 16px rgba(25, 118, 210, 0.4); }
    .quiz-button.btn-primary:active:not(:disabled) {
      transform: translateY(0);
      box-shadow: 0 2px 8px rgba(25, 118, 210, 0.3); }
    .quiz-button.btn-primary:disabled {
      opacity: 0.5;
      cursor: not-allowed;
      transform: none; }
  .quiz-button.btn-secondary {
    background-color: #f5f5f5;
    color: #2c3e50;
    border-color: #e0e0e0;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05); }
    .quiz-button.btn-secondary:hover:not(:disabled) {
      background-color: #ededed;
      border-color: #c7c7c7;
      transform: translateY(-1px);
      box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08); }
    .quiz-button.btn-secondary:disabled {
      opacity: 0.5;
      cursor: not-allowed; }

.dark-mode .quiz-button.btn-primary {
  background: linear-gradient(135deg, #42a5f5 0%, #2a99f4 100%);
  box-shadow: 0 2px 8px rgba(66, 165, 245, 0.3); }
  .dark-mode .quiz-button.btn-primary:hover:not(:disabled) {
    background: linear-gradient(135deg, #5ab1f6 0%, #42a5f5 100%);
    box-shadow: 0 4px 16px rgba(66, 165, 245, 0.4); }
  .dark-mode .quiz-button.btn-primary:active:not(:disabled) {
    box-shadow: 0 2px 8px rgba(66, 165, 245, 0.3); }

.dark-mode .quiz-button.btn-secondary {
  background-color: #383838;
  color: #e8e8e8;
  border-color: #404040;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3); }
  .dark-mode .quiz-button.btn-secondary:hover:not(:disabled) {
    background-color: #454545;
    border-color: #5a5a5a;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.4); }

.quiz-summary {
  padding: 3rem 2.5rem;
  text-align: center;
  background: linear-gradient(135deg, #fafafa 0%, #f5f5f5 100%);
  border-radius: 12px;
  border: 1px solid #e0e0e0;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04); }
  @media (max-width: 480px) {
    .quiz-summary {
      padding: 1.5rem 1.25rem; } }
.dark-mode .quiz-summary {
  background: linear-gradient(135deg, #383838 0%, #303030 100%);
  border-color: #404040;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2); }

.quiz-body > .quiz-summary {
  margin: 0 auto;
  border: none;
  box-shadow: none;
  background: linear-gradient(135deg, white 0%, #f5f5f5 100%); }

.dark-mode .quiz-body > .quiz-summary {
  border: none;
  box-shadow: none;
  background: linear-gradient(135deg, #2d2d2d 0%, #424242 100%); }

.quiz-score-circle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 140px;
  height: 140px;
  margin: 0 auto 2rem;
  border-radius: 50%;
  font-size: 3rem;
  font-weight: 700;
  background: linear-gradient(135deg, white 0%, #fafafa 100%);
  border: 5px solid #1976d2;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
  transition: transform 250ms cubic-bezier(0.4, 0, 0.2, 1); }
  .quiz-score-circle:hover {
    transform: scale(1.05); }
  .quiz-score-circle.passed {
    color: #2e7d32;
    border-color: #4caf50;
    box-shadow: 0 4px 16px rgba(76, 175, 80, 0.3); }
  .quiz-score-circle.failed {
    color: #c62828;
    border-color: #c62828; }
  @media (max-width: 480px) {
    .quiz-score-circle {
      width: 100px;
      height: 100px;
      font-size: 2rem; } }
.dark-mode .quiz-score-circle {
  background: #1a1a1a;
  border-color: #42a5f5; }
  .dark-mode .quiz-score-circle.passed {
    color: #a5d6a7;
    border-color: #a5d6a7; }
  .dark-mode .quiz-score-circle.failed {
    color: #ef9a9a;
    border-color: #ef9a9a; }

.quiz-score-label {
  font-size: 0.9rem;
  color: #7f8c8d;
  margin-bottom: 0.5rem; }

.dark-mode .quiz-score-label {
  color: #a0a0a0; }

.quiz-score-message {
  font-size: 1.25rem;
  font-weight: 600;
  color: #2c3e50;
  margin-bottom: 1rem; }
  .quiz-score-message.passed {
    color: #2e7d32; }
  .quiz-score-message.failed {
    color: #c62828; }

.dark-mode .quiz-score-message {
  color: #e8e8e8; }
  .dark-mode .quiz-score-message.passed {
    color: #a5d6a7; }
  .dark-mode .quiz-score-message.failed {
    color: #ef9a9a; }

.quiz-details {
  margin: 1.5rem 0;
  padding: 1rem;
  background-color: rgba(255, 255, 255, 0.7);
  border-radius: 0.5rem;
  font-size: 0.9rem; }
  .quiz-details .detail-row {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0; }
    .quiz-details .detail-row .label {
      font-weight: 500;
      color: #7f8c8d; }
    .quiz-details .detail-row .value {
      font-weight: 600;
      color: #2c3e50; }

.dark-mode .quiz-details {
  background-color: rgba(55, 65, 81, 0.5); }
  .dark-mode .quiz-details .detail-row .label {
    color: #a0a0a0; }
  .dark-mode .quiz-details .detail-row .value {
    color: #e8e8e8; }

.quiz-detailed-results {
  margin-top: 2.5rem; }

/* Center action buttons in detailed results (e.g. Retry) */
.quiz-detailed-results .quiz-button {
  display: block;
  margin: 1.5rem auto 0 auto;
  /* top auto-centered horizontally */
  max-width: 360px;
  /* prevents excessively wide buttons on large screens */
  width: 100%;
  text-align: center; }

.quiz-detailed-results .quiz-button.btn-primary {
  padding-left: 1.25rem;
  padding-right: 1.25rem; }

.quiz-detailed-title {
  margin: 0 0 1.5rem 0;
  font-size: 1.5rem;
  font-weight: 700;
  color: #2c3e50;
  letter-spacing: -0.01em; }
  @media (max-width: 768px) {
    .quiz-detailed-title {
      font-size: 1.25rem; } }
.dark-mode .quiz-detailed-title {
  color: #e8e8e8; }

.quiz-result-card {
  margin-top: 1.5rem; }

.quiz-result-question-text {
  margin: 0 0 1.5rem 0;
  font-size: 1rem;
  line-height: 1.6;
  color: #2c3e50; }

.dark-mode .quiz-result-question-text {
  color: #e8e8e8; }

.quiz-explanation-box {
  margin-top: 1.25rem;
  padding: 1rem 1.25rem;
  background-color: #f5f5f5;
  border-radius: 8px;
  font-size: 0.95rem;
  line-height: 1.6;
  color: #2c3e50;
  border: 1px solid #e0e0e0; }
  .quiz-explanation-box strong {
    color: #2c3e50; }

.dark-mode .quiz-explanation-box {
  background-color: #383838;
  border-color: #404040;
  color: #e8e8e8; }
  .dark-mode .quiz-explanation-box strong {
    color: #e8e8e8; }

@media (max-width: 480px) {
  .quiz-header {
    padding: 1rem 1.25rem; }
    .quiz-header .quiz-title {
      font-size: 1.25rem; }
  .quiz-body {
    padding: 1.25rem; }
  .quiz-question {
    font-size: 1.05rem;
    margin-bottom: 1rem !important; }
  .quiz-progress-container {
    padding: 1rem 1.5rem !important; }
  .quiz-buttons {
    margin-top: 1rem !important; }
  .quiz-options {
    gap: 0.5rem !important; }
  .option-label {
    padding: 0.875rem 1rem;
    font-size: 0.95rem; }
  .option-letter {
    width: 28px;
    height: 28px;
    min-width: 28px;
    margin-right: 0.75rem;
    font-size: 0.85rem; } }

.quiz-option input[type="radio"]:focus-visible + .option-label,
.quiz-option input[type="checkbox"]:focus-visible + .option-label {
  outline: 3px solid #1976d2;
  outline-offset: 2px; }

.dark-mode .quiz-option input[type="radio"]:focus-visible + .option-label,
.dark-mode .quiz-option input[type="checkbox"]:focus-visible + .option-label {
  outline-color: #42a5f5; }

.quiz-button:focus-visible {
  outline: 3px solid #1976d2;
  outline-offset: 2px; }

.dark-mode .quiz-button:focus-visible {
  outline-color: #42a5f5; }

@media (prefers-reduced-motion: reduce) {
  .quiz-container,
  .quiz-card,
  .option-label,
  .quiz-button,
  .progress-bar {
    transition: none; } }

@media (prefers-contrast: more) {
  .quiz-option input[type="radio"]:checked + .option-label {
    border-width: 3px; }
  .option-label {
    border-width: 2px; } }

@media print {
  .quiz-container {
    max-width: 100%; }
  .quiz-buttons {
    display: none; }
  .quiz-card {
    box-shadow: none;
    border: 1px solid #000; } }