.menu-superior > li:nth-child(1){
    background-color: rgba(0,0,0,.4);
    box-shadow: 0 0 .1em #000;
    border-radius: .2em;
    font-weight: bold;
}

.galeria{
    padding: 2em;
    position: relative;
    margin: auto;
    width: 100%;
    height: 100%;
}

.foto-ferramentas {
    position: absolute;
    width: 85%;
    height: 75%;
    opacity: 0;
    animation-name: animacao;
    animation-duration: 90s;
    animation-iteration-count: infinite;
}

@keyframes animacao {
    10% {
        opacity: 1;
        transform: scale(1.1, 1.1);
    }
    20% {
        opacity: 0;
    }
}

.foto-ferramentas:nth-child(1){
    animation-delay: 0s;
}

.foto-ferramentas:nth-child(2){
    animation-delay: 10s;
}

.foto-ferramentas:nth-child(3){
    animation-delay: 20s;
}

.foto-ferramentas:nth-child(4){
    animation-delay: 30s;
}

.foto-ferramentas:nth-child(5){
    animation-delay: 40s;
}

.foto-ferramentas:nth-child(6){
    animation-delay: 50s;
}

.foto-ferramentas:nth-child(7){
    animation-delay: 60s;
}

.foto-ferramentas:nth-child(8){
    animation-delay: 70s;
}

.foto-ferramentas:nth-child(9){
   animation-delay: 80s; 
}

.conteudo {
    background-color: white;
    width: 100%;
}