.anuncio{
    position: absolute;
    width: calc(100% - 4px);
    height: calc(100% - 4px);
    margin: 2px;
	top: 0;
	left: 0;
	background-color: #fff;
	background-repeat: no-repeat;
	background-position: center;
	background-size: cover;
}
.post .anuncio{
    width: 100%;
    height: 100%;
    margin: 0px;
    display: -webkit-flex;
    display: flex;
    justify-content: center;
    align-items: center;
}