Content-align¶

The content-align style aligns content inside a widget.

Syntax¶

content-align: <horizontal> <vertical>;

content-align-horizontal: <horizontal>;
content-align-vertical: <vertical>;

The content-align style takes a <horizontal> followed by a <vertical>.

You can specify the alignment of content on both the horizontal and vertical axes at the same time, or on each of the axis separately. To specify content alignment on a single axis, use the respective style and type:

content-align-horizontal takes a <horizontal> and does alignment along the horizontal axis; and
content-align-vertical takes a <vertical> and does alignment along the vertical axis.

Examples¶

Basic usage¶

This first example shows three labels stacked vertically, each with different content alignments.

Outputcontent_align.pycontent_align.tcss

from textual.app import App
from textual.widgets import Label


class ContentAlignApp(App):
    CSS_PATH = "content_align.tcss"

    def compose(self):
        yield Label("With [i]content-align[/] you can...", id="box1")
        yield Label("...[b]Easily align content[/]...", id="box2")
        yield Label("...Horizontally [i]and[/] vertically!", id="box3")


if __name__ == "__main__":
    app = ContentAlignApp()
    app.run()

#box1 {
    content-align: left top;
    background: red;
}

#box2 {
    content-align-horizontal: center;
    content-align-vertical: middle;
    background: green;
}

#box3 {
    content-align: right bottom;
    background: blue;
}

Label {
    width: 100%;
    height: 1fr;
    padding: 1;
    color: white;
}

All content alignments¶

The next example shows a 3 by 3 grid of labels. Each label has its text aligned differently.

Outputcontent_align_all.pycontent_align_all.tcss

from textual.app import App
from textual.widgets import Label


class AllContentAlignApp(App):
    CSS_PATH = "content_align_all.tcss"

    def compose(self):
        yield Label("left top", id="left-top")
        yield Label("center top", id="center-top")
        yield Label("right top", id="right-top")
        yield Label("left middle", id="left-middle")
        yield Label("center middle", id="center-middle")
        yield Label("right middle", id="right-middle")
        yield Label("left bottom", id="left-bottom")
        yield Label("center bottom", id="center-bottom")
        yield Label("right bottom", id="right-bottom")


if __name__ == "__main__":
    app = AllContentAlignApp()
    app.run()

#left-top {
    /* content-align: left top; this is the default implied value. */
}
#center-top {
    content-align: center top;
}
#right-top {
    content-align: right top;
}
#left-middle {
    content-align: left middle;
}
#center-middle {
    content-align: center middle;
}
#right-middle {
    content-align: right middle;
}
#left-bottom {
    content-align: left bottom;
}
#center-bottom {
    content-align: center bottom;
}
#right-bottom {
    content-align: right bottom;
}

Screen {
    layout: grid;
    grid-size: 3 3;
    grid-gutter: 1;
}

Label {
    width: 100%;
    height: 100%;
    background: $primary;
}

CSS¶

/* Align content in the very center of a widget */
content-align: center middle;
/* Align content at the top right of a widget */
content-align: right top;

/* Change the horizontal alignment of the content of a widget */
content-align-horizontal: right;
/* Change the vertical alignment of the content of a widget */
content-align-vertical: middle;

Python¶

# Align content in the very center of a widget
widget.styles.content_align = ("center", "middle")
# Align content at the top right of a widget
widget.styles.content_align = ("right", "top")

# Change the horizontal alignment of the content of a widget
widget.styles.content_align_horizontal = "right"
# Change the vertical alignment of the content of a widget
widget.styles.content_align_vertical = "middle"