body {
    font-family: 'Helvetica Neue', sans-serif;
    margin: 0;
    padding: 0;
    text-transform: uppercase;
  }
  
  header {
    padding: 2em;
  }
  
  h1 {
    font-size: 3em;
    font-weight: bold;
  }
  
  h2 {
    font-size: 1.5em;
    color: grey;
    font-weight: normal;
    margin-top: 0.5em;
  }
  
  /* Page d’accueil */
  .gallery {
    display: flex;
    justify-content: center;
    gap: 3em;
    margin-top: 2em;
  }
  
  .gallery-img {
    width: 550px;
    height: 550px;
    object-fit: cover;
    transition: all 0.3s ease;
  }
  
  .gallery-img:hover {
    outline: 4px solid #72ff72;
    transform: scale(1.03);
  }
  
  /* Page carnet */
  .container {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 2em;
  }
  
  .menu {
    width: 300px;
  }
  
  .subtitle {
    color: grey;
    font-size: 1.1em;
  }
  
  .menu ul {
    list-style: none;
    padding: 0;
    margin-top: 2em;
  }
  
  .menu li {
    font-weight: bold;
    font-size: 1.5em;
    margin-bottom: 1em;
    cursor: pointer;
    transition: color 0.3s ease;
  }
  
  .menu li:hover {
    color: #72ff72;
  }
  
  .image-preview {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 400px;
  }
  
  #preview-image {
    max-width: 550px;
    height: auto;
    opacity: 0;
    transition: opacity 0.3s ease;
  }
  body {
    font-family: 'Helvetica Neue', sans-serif;
    margin: 2em;
    background: white;
    color: black;
  }
  
  .back-link {
    color: #72ff72;
    font-weight: bold;
    font-family: 'Helvetica Neue', sans-serif;
    text-decoration: none;
    display: inline-block;
    margin-bottom: 2em;
  }
  
  .section-title {
    font-family: 'Helvetica Neue', sans-serif;
    font-weight: 900;
    font-size: 1.8em;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 2em;
  }
  
  .gallery {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2em;
    justify-items: center;
  }
  
  .gallery img {
    width: 160px;
    height: 230px;
    object-fit: cover;
    transition: outline 0.3s ease;
  }
  
  .gallery img:hover {
    outline: 3px solid #72ff72;
  }
  .page-detail {
    text-align: center;
    margin-top: 4em;
  }
  
  .page-detail img,
  .page-detail video {
    width: 600px;
    height: auto;
    object-fit: contain;
    border: 4px solid #72ff72;
    padding: 4px;
    margin-bottom: 1.5em;
  }
  
  .legend {
    font-style: italic;
    font-weight: 500;
    font-family: 'Helvetica Neue', sans-serif;
    font-size: 1em;
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
    text-transform: none;
    color: black;
  }
  
  .back-link {
    color: #72ff72;
    font-weight: bold;
    font-family: 'Helvetica Neue', sans-serif;
    text-decoration: none;
    display: inline-block;
    margin: 2em;
    font-size: 0.95em;
  }
  .gallery {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2em;
    justify-items: center;
    margin: 2em;
  }
  
  .gallery img {
    width: 160px;
    height: 230px;
    object-fit: cover;
    transition: outline 0.3s ease;
  }
  
  .gallery img:hover {
    outline: 3px solid #72ff72;
  }
  
  .back-link {
    color: #72ff72;
    font-weight: bold;
    font-family: 'Helvetica Neue', sans-serif;
    text-decoration: none;
    display: inline-block;
    margin: 2em;
  }
  .gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 40px;
    padding: 0 30px;
  }
  
  .gallery img {
    width: 100%;
    border: 3px solid #72ff72;
    transition: transform 0.3s ease;
  }
  
  .gallery img:hover {
    transform: scale(1.02);
  }
  @font-face {
    font-family: "MyFont";
    src: url("Myfontem4-FinalFinal.ttf") format("truetype");
  }
  body {
    font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
    font-weight: bold;
  }
  
  .email-link {
    color: black;
    text-decoration: none;
    font-weight: bold;
    transition: color 0.3s ease;
  }
  
  .email-link:hover {
    color: #72ff72;
  }
  /* POLICES */
body {
    margin: 0;
    padding: 0;
    background-color: white;
    font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
    overflow-x: hidden;
  }
  
  /* TITRES en Helvetica Bold Capitales */
  .site-title {
    font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
    font-weight: bold;
    text-transform: uppercase;
    font-size: 1.5rem;
    color: black;
    padding: 2rem;
    text-align: left;
    transition: color 0.3s ease;
  }
  
  .site-title:hover {
    color: #72ff72;
  }
  
  /* GALERIE */
  .gallery {
    display: flex;
    justify-content: center;
    gap: 2rem;
    padding: 2rem;
  }
  
  .gallery-img {
    width: auto;
    height: auto;
    max-width: 300px; /* comme dans le trombinoscope */
    transition: filter 0.3s ease;
  }
  
  .gallery-img:hover {
    filter: brightness(0) saturate(100%) invert(84%) sepia(5%) saturate(1184%) hue-rotate(56deg) brightness(104%) contrast(101%);
  }
  
  /* LIGNES DÉFILANTES */
  .marquee-container {
    position: relative;
    width: 100%;
    overflow: hidden;
    padding: 2rem 0;
    display: flex;
    flex-direction: column;
    gap: 2rem;
  }
  
  .marquee {
    white-space: nowrap;
    font-family: "Courier New", monospace;
    font-size: 1.2rem;
    font-weight: normal;
  }
  
  .marquee-left {
    animation: scroll-left 60s linear infinite;
    transform: translateX(100%);
  }
  
  .marquee-right {
    animation: scroll-right 60s linear infinite;
    transform: translateX(-100%);
  }
  
  @keyframes scroll-left {
    0%   { transform: translateX(100%); }
    100% { transform: translateX(-200%); }
  }
  
  @keyframes scroll-right {
    0%   { transform: translateX(-100%); }
    100% { transform: translateX(200%); }
  }
  
  /* LETTRE VERTE */
  .green-letter {
    color: #72ff72;
  }
  .site-title {
    font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
    font-weight: bold;
    text-transform: uppercase;
    font-size: 2.5rem; /* plus grand */
    color: #72ff72; /* vert fluo permanent */
    padding: 2rem 2rem 0 2rem;
    text-align: left;
  }
  .back-home {
    display: block;
    font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
    font-weight: bold;
    text-transform: uppercase;
    color: black;
    text-decoration: none;
    margin: 2rem;
    font-size: 1rem;
    transition: color 0.3s ease;
  }
  
  .back-home:hover {
    color: #72ff72;
  }
  .sommaire {
    margin-left: 2cm;
  }
  <link rel="stylesheet" href="style.min.css">