SiteOrigin Editor: Post --> align Title left?

I can’t figure out how to change custome .css files for Sydney.

I would like to know where I can add the custom .css
How does the code look like for a post.

Within the post, I am using the SiteOrigin Editor.
The title is always centered.

But I want to have it aligned left.
How to do so ?

Hi there,

You can use Custom CSS plugin to put your custom CSS code, and below is the CSS code to move the SO Editor title to left:

.so-widget-sow-editor .widget-title {
    text-align: left;
.panel-grid-cell .widget-title:after {
    left: 25px;