table#ListaLibros i, table#ListaPrestamos i{
    font-size: 1.2em;
}
table#ListaLibros i:hover, table#ListaPrestamos i:hover{
    background: #222222;
    border-radius: 3px;
    color: white !important;
    cursor: pointer;
}
#tblDevolucion th{
    text-align: right;
    background: #f7f7f7;
}