Chartjs-How to add left padding for my charts done in ChartJs and my Google Map so it is not glued to the limit of the page on the left

Just add a width to 100% and not u have a full screen map:

<div id="map_canvas" style="width:100%; height:500px"></div> 

Or if u want just move use in there margin-left: (your vaule)

try my trick, from

labels: [ 'label_a', 'label_b', 'label_c' ],

to

labels: [ '       label_a', 'label_b', 'label_c' ],