ddorn · October 10, 2025 15:07 · bxdgfw · Mar 10, 2025
diff --git a/st_horizontal.py b/st_horizontal.py
 """
 MIT License

 Copyright (c) 2024 Diego Dorn

 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights
 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 copies of the Software, and to permit persons to whom the Software is
 furnished to do so, subject to the following conditions:

 The above copyright notice and this permission notice shall be included in all
 copies or substantial portions of the Software.

 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
 """

 from contextlib import contextmanager

 import streamlit as st

 HORIZONTAL_STYLE = """
 <style class="hide-element">
    /* Hides the style container and removes the extra spacing */
    .element-container:has(.hide-element) {
        display: none;
    }
    /*
        The selector for >.element-container is necessary to avoid selecting the whole
        body of the streamlit app, which is also a stVerticalBlock.
    */
    div[data-testid="stVerticalBlock"]:has(> .element-container .horizontal-marker) {
        display: flex;
        flex-direction: row !important;
        flex-wrap: wrap;
        gap: 0.5rem;
        align-items: baseline;
    }
    /* Buttons and their parent container all have a width of 704px, which we need to override. We target the direct child and grand-child to avoid styling smaller elements, like toggles, that also use divs */
    div[data-testid="stVerticalBlock"]:has(> .element-container .horizontal-marker) > div > div,
    div[data-testid="stVerticalBlock"]:has(> .element-container .horizontal-marker) > div {
        width: max-content !important;
    }
    /* Just an example of how you would style buttons, if desired */
    /*
    div[data-testid="stVerticalBlock"]:has(> .element-container .horizontal-marker) button {
        border-color: red;
    }
    */
 </style>
 """

 @contextmanager
 def st_horizontal():
    st.markdown(HORIZONTAL_STYLE, unsafe_allow_html=True)
    with st.container():
        st.markdown('<span class="hide-element horizontal-marker"></span>', unsafe_allow_html=True)
        yield

 if __name__ == "__main__":
    buttons = [
        "Allow",
        "Deny",
        "Always Allow",
        "Edit",
        "More Options",
    ] * 2

    st.header("With the new horizontal layout")

    with st_horizontal():
        st.write("Confirm?")
        st.button("✅ Yes")
        st.button("❌ No")


    with st_horizontal():
        for i, option in enumerate(buttons):
            st.button(option, key=f"button_{i}")
    st.header("With columns")

    cols = st.columns(len(buttons))
    for i, option in enumerate(buttons):
        cols[i].button(option, key=f"button_col_{i}")

    st.header("Sample elements to check that we did not break anything")

    st.button("A button")
    st.button("Another button")
    with st.expander("Code"):
        st.code("""
    print("Hello, world!")
        """, language="python")

    cols = st.columns(3)
    for i, col in enumerate(cols):
        col.write(f"Column {i}")
        col.button("Click me", key=f"col_{i}")


    with st.container(border=True):
        st.write("Inside container")
        st.button("Click me", key="container")
        st.button("Click me", key="container1")

    with st_horizontal():
        st.write("Inside horizontal container")
        st.toggle("Toggle", key="containera")
        st.toggle("Toggle 2", key="containerb")
	"""
	MIT License

	Copyright (c) 2024 Diego Dorn

	Permission is hereby granted, free of charge, to any person obtaining a copy
	of this software and associated documentation files (the "Software"), to deal
	in the Software without restriction, including without limitation the rights
	to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	copies of the Software, and to permit persons to whom the Software is
	furnished to do so, subject to the following conditions:

	The above copyright notice and this permission notice shall be included in all
	copies or substantial portions of the Software.

	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	SOFTWARE.
	"""

	from contextlib import contextmanager

	import streamlit as st

	HORIZONTAL_STYLE = """
	<style class="hide-element">
	/* Hides the style container and removes the extra spacing */
	.element-container:has(.hide-element) {
	display: none;
	}
	/*
	The selector for >.element-container is necessary to avoid selecting the whole
	body of the streamlit app, which is also a stVerticalBlock.
	*/
	div[data-testid="stVerticalBlock"]:has(> .element-container .horizontal-marker) {
	display: flex;
	flex-direction: row !important;
	flex-wrap: wrap;
	gap: 0.5rem;
	align-items: baseline;
	}
	/* Buttons and their parent container all have a width of 704px, which we need to override. We target the direct child and grand-child to avoid styling smaller elements, like toggles, that also use divs */
	div[data-testid="stVerticalBlock"]:has(> .element-container .horizontal-marker) > div > div,
	div[data-testid="stVerticalBlock"]:has(> .element-container .horizontal-marker) > div {
	width: max-content !important;
	}
	/* Just an example of how you would style buttons, if desired */
	/*
	div[data-testid="stVerticalBlock"]:has(> .element-container .horizontal-marker) button {
	border-color: red;
	}
	*/
	</style>
	"""

	@contextmanager
	def st_horizontal():
	st.markdown(HORIZONTAL_STYLE, unsafe_allow_html=True)
	with st.container():
	st.markdown('<span class="hide-element horizontal-marker"></span>', unsafe_allow_html=True)
	yield

	if __name__ == "__main__":
	buttons = [
	"Allow",
	"Deny",
	"Always Allow",
	"Edit",
	"More Options",
	] * 2

	st.header("With the new horizontal layout")

	with st_horizontal():
	st.write("Confirm?")
	st.button("✅ Yes")
	st.button("❌ No")


	with st_horizontal():
	for i, option in enumerate(buttons):
	st.button(option, key=f"button_{i}")
	st.header("With columns")

	cols = st.columns(len(buttons))
	for i, option in enumerate(buttons):
	cols[i].button(option, key=f"button_col_{i}")

	st.header("Sample elements to check that we did not break anything")

	st.button("A button")
	st.button("Another button")
	with st.expander("Code"):
	st.code("""
	print("Hello, world!")
	""", language="python")

	cols = st.columns(3)
	for i, col in enumerate(cols):
	col.write(f"Column {i}")
	col.button("Click me", key=f"col_{i}")


	with st.container(border=True):
	st.write("Inside container")
	st.button("Click me", key="container")
	st.button("Click me", key="container1")

	with st_horizontal():
	st.write("Inside horizontal container")
	st.toggle("Toggle", key="containera")
	st.toggle("Toggle 2", key="containerb")