why is my lavacharts/googlecharts not responsive?

i know is a little hard to dump this question in here, but i dont know what else to do. I'm trying to plot GOOGLE CHARTS in some part of my page, but it does not being responsive in any way. I tried apply 100% width and height in the divs, but it doesnt work. Inspecting my code, there's not a CSS rule that is limiting the chart width...

<div class="tab_conteudo" id="resumo_resgates" >

    <div id="bar_div" style="width: 100%; height: 100%;"></div>
    <div id="col_div" style="width: 100%; height: 100%;"></div>     

</div>

<?= $lava->render('BarChart', 'Carros', 'bar_div') ?>
<?= $lava->render('ColumnChart', 'Qtd.', 'col_div') ?>

When i first open it starts like this:

When i resize the screen it go to the size it shoul be, until the screen size keeps getting small and the chart dont get small to be responsive.

via Chebli Mohamed