.fundo {
    display: block;
    background-color: #000000;
    color: #ffffff;
}

a {
    color: #9ca3af;
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #ffffff;
}

.social-icon {
    width: 40px;
    height: 40px;
    border: 1px solid #404040;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.social-icon:hover {
    background-color: white;
    color: black;
    border-color: white;
}