.obra {
    border: 1px solid #3d3640;
    height: 395px;
    margin: 5px auto;
    position: relative;
    width: 490px;}

.img-topic {
    opacity: .7;
    width: 490px;}

.tabl-topic {
    background: linear-gradient(0deg,rgb(46 43 47) 0%, rgb(66 62 68) 65%, rgba(255,255,255,0) 100%);
    height: 265px;
    position: absolute;
    top: 130px;
    width: 490px;}

.sub-titletopic {
    background-color: #2a272b;
    border: 2px solid #3b363e;
    height: 80px;
    line-height: 70px;
    margin: 130px auto auto;
    padding: 10px;
    width: 400px;}

.text-subtitletopic {
    font-family: Questrial,sans-serif;
    font-size: 20px;
    font-weight: 600;
    letter-spacing: 2px;
    text-align: center;
    text-transform: uppercase;
}