.botao-reprovar {
    background-color: transparent;
    background-size: cover;
    background-image: url(../img/ico-ocultar.png);
    width: 25px;
    height: 25px;
    border: 0px;
    opacity: 0.3;
    float: right;
}
.botao-excluir {
    background-color: transparent;
    background-size: cover;
    background-image: url(../img/ico-excluir.png);
    width: 25px;
    height: 25px;
    border: 0px;
    opacity: 0.3;
    cursor: pointer;
}
.botao-excluir:hover{
    background-color: #eee;
}