python -m pip install --upgrade pip
py -3 -m pip install --upgrade pip
pip3 install Django==1.10.3
py -3 -m pip install Django==1.10.3
var width = document.getElementById("id").parentNode.offsetWidth - 5;
document.getElementById("id").style.width = width + 'px';
document.getElementById('js-canvas').style.width = 'calc(100% - 5px)';