.marcas{
    margin: 20px;
}

.btn-whatsapp-fixed {
    position: fixed;
    left: 0;
    top: 40%;
    transform: translateY(-50%);
    background-color: #25d366;
    color: #fff;
    border-radius: 50%; /* Deixa o botão redondo */
    width: 48px; /* Define largura */
    height: 48px; /* Define altura */
    font-size: 30px; /* Tamanho do ícone */
    z-index: 500;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all 0.3s ease;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    text-decoration: none;
}

.btn-whatsapp-fixed:hover {
    background-color: #1ebe5d;
    transform: translateY(-50%) scale(1.1); /* Aumenta um pouco no hover */
}