How to download all font sizes similar to a connection via a link from google fonts?

Question

css

Hello!
Tell me how to combine into one family, connected 2 or more files with fonts, so that with one indication of the family, font-family: 'Muli', sans-serif;their size changes when specified through font-weight?
(thin, regular, bold) - (300, 500, 700);
This is what it looks like through the link

<link href="https://fonts.googleapis.com/css?family=Muli:300,400,600,700&display=swap" rel="stylesheet">

and with this connection

p,a,h1,h2,h3,h4,h5 {
     font-family: 'Muli', sans-serif;
}

We just specify font-weight:300, 400, 500 or 700 and the dimension is selected already in the presence of included files, so if the connection has thin, then it will be displayed at font-weight:300.
How to make the same method of changing the thickness, but on the condition that the files are loaded from our server, and not from Google?