app.py

import dash
from dash import dcc, html

# example for https://community.plotly.com/t/two-graphs-side-by-side/5312

external_stylesheets = ['https://codepen.io/chriddyp/pen/bWLwgP.css']

app = dash.Dash(external_stylesheets=external_stylesheets)
# Expose the Flask server instance
server = app.server
app.layout = html.Div([
    html.Div([
        html.Div([
            html.H3('Column 1'),
            dcc.Graph(id='g1', figure={'data': [{'y': [1, 2, 3]}]})
        ], className="six columns"),

        html.Div([
            html.H3('Column 2'),
            dcc.Graph(id='g2', figure={'data': [{'y': [1, 2, 3]}]})
        ], className="six columns"),
    ], className="does-not-matter-can-be-container")
])