What are custom styles?
Custom styles are CSS styles for classes.
Custom styles are CSS styles for classes.
No. Component content entities do not have view modes.
Running the composer update command will update any composer packages that have newer versions available.
You can use Elements to create content but we don't recommend doing so for multiple reasons.
The Youtube video embed is responsive so it should expand to the width of its parent. If you do need to set a width you can apply the Width CSS property through the Style Builder.
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