.top-center-image {
    position: fixed;       /* colle l'image en haut */
    top: 0;                /* position verticale */
    left: 50%;             /* centre horizontal */
    transform: translateX(-50%); /* ajuste le centre */
    z-index: 1000;   
}

.top-center-image img {
    max-width: 150px;
    height: auto;
    box-shadow: 0 4px 12px rgba(0,0,0,0.4); /* ombre si tu veux */
    border: none;        /* supprime la bordure blanche */
    outline: none;       /* supprime le contour de focus éventuel */
    display: block;      /* évite les petits espaces blancs sous l’image */
}


#crypto-footer {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background: rgba(30,30,30,0.95); /* couleur de base avec transparence */
  display: flex;
  justify-content: center;
  padding: 8px 0;
  border-top: 1px solid #333;
  z-index: 999;

  /* Image de fond */
  background-image: url('banner.jpg'); /* Remplace par ton image */
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}


/* Boutons crypto compacts */
.crypto-buttons {
  display: flex;
  gap: 10px;
}

.crypto-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid #fff;
  border-radius: 50%;
  background: transparent;
  color: #fff;
  cursor: pointer;
  font-size: 18px;
  transition: all 0.2s ease;
}

.crypto-btn:hover {
  background: #fff;
  color: #1e1e1e;
}