.formulario-componente-telefone .input-group-addon {
    padding-left: 15px;
    padding-right: 15px;
    font-size: 14px;
    font-weight: 400;
    line-height: 1;
    color: #555;
    text-align: center;
    background-color: #eee;
    border: 1px solid #ccc;
    border-radius: 4px 0 0 4px;
}

.span-phone {
    min-width: 45px;
    text-align: center;
    border: 1px solid #ccc !important;
    background-color: #eeeeee;
}