conteudo.css

.img1 {
    background-image: url(iron\ man.jpg);
    box-shadow: 30px 30px 30px 30px rgba(216, 183, 37, 0.6);

}

.img2 {
    background-image: url(capitao.jpg);
    box-shadow: 30px 30px 30px 30px rgba(0, 0, 20, 20.6);

}

.img3 {
    background-image: url(dr.jpg);
    box-shadow: 30px 30px 30px 30px rgba(241, 102, 92, 0.6);

}

.img4 {
    background-image: url(thor.jpg);
    box-shadow: 30px 30px 30px 30px rgba(129, 111, 240, 0.6);

}

.img5 {
    background-image: url(peter.jpg);
    box-shadow: 30px 30px 30px 30px rgba(0, 20, 120, 0.6);

}

.img6 {
    background-image: url(w.jpg);
    box-shadow: 30px 30px 30px 30px rgba(110, 220, 120, 0.6);

}

.img p {
    position: absolute;
    left: 0; bottom: 0;
    padding: 10px;
    background-color: rgba(0, 0, 0, 0.6);
    transform: rotate(-90deg);
    transition: all 0.3s;
    transform-origin: 0% 0%;
    color: #fff;
    text-transform: uppercase;
    white-space: nowrap;
    box-shadow: 30px 30px 30px 30px rgba(0, 0, 0, 0.6);
}