diff --git a/doc/install.rst b/doc/install.rst
index be924b012ce65..3d11b506473ee 100644
--- a/doc/install.rst
+++ b/doc/install.rst
@@ -33,16 +33,17 @@ Installing the latest release
 .. div:: install-instructions
 
   .. tab-set::
+    :class: tabs-os
 
-    .. tab-item:: pip
-      :class-label: tab-6
-      :sync: packager-pip
+    .. tab-item:: Windows
+      :class-label: tab-4
 
       .. tab-set::
+        :class: tabs-package-manager
 
-        .. tab-item:: Windows
-          :class-label: tab-4
-          :sync: os-windows
+        .. tab-item:: pip
+          :class-label: tab-6
+          :sync: package-manager-pip
 
           Install the 64-bit version of Python 3, for instance from the
           `official website <https://www.python.org/downloads/windows/>`__.
@@ -66,9 +67,21 @@ Installing the latest release
             python -m pip freeze             # show all installed packages in the environment
             python -c "import sklearn; sklearn.show_versions()"
 
-        .. tab-item:: macOS
-          :class-label: tab-4
-          :sync: os-macos
+        .. tab-item:: conda
+          :class-label: tab-6
+          :sync: package-manager-conda
+
+          .. include:: ./install_instructions_conda.rst
+
+    .. tab-item:: MacOS
+      :class-label: tab-4
+
+      .. tab-set::
+        :class: tabs-package-manager
+
+        .. tab-item:: pip
+          :class-label: tab-6
+          :sync: package-manager-pip
 
           Install Python 3 using `homebrew <https://brew.sh/>`_ (`brew install python`)
           or by manually installing the package from the `official website
@@ -93,9 +106,21 @@ Installing the latest release
             python -m pip freeze             # show all installed packages in the environment
             python -c "import sklearn; sklearn.show_versions()"
 
-        .. tab-item:: Linux
-          :class-label: tab-4
-          :sync: os-linux
+        .. tab-item:: conda
+          :class-label: tab-6
+          :sync: package-manager-conda
+
+          .. include:: ./install_instructions_conda.rst
+
+    .. tab-item:: Linux
+      :class-label: tab-4
+
+      .. tab-set::
+        :class: tabs-package-manager
+
+        .. tab-item:: pip
+          :class-label: tab-6
+          :sync: package-manager-pip
 
           Python 3 is usually installed by default on most Linux distributions. To
           check if you have it installed, try:
@@ -127,28 +152,12 @@ Installing the latest release
             python3 -m pip freeze             # show all installed packages in the environment
             python3 -c "import sklearn; sklearn.show_versions()"
 
-    .. tab-item:: conda
-      :class-label: tab-6
-      :sync: packager-conda
-
-      Install conda using the `Anaconda or miniconda installers
-      <https://docs.conda.io/projects/conda/en/latest/user-guide/install/>`__
-      or the `miniforge installers
-      <https://github.com/conda-forge/miniforge#miniforge>`__ (no administrator
-      permission required for any of those). Then run:
-
-      .. prompt:: bash
-
-        conda create -n sklearn-env -c conda-forge scikit-learn
-        conda activate sklearn-env
-
-      In order to check your installation, you can use:
+        .. tab-item:: conda
+          :class-label: tab-6
+          :sync: package-manager-conda
 
-      .. prompt:: bash
+          .. include:: ./install_instructions_conda.rst
 
-        conda list scikit-learn  # show scikit-learn version and location
-        conda list               # show all installed packages in the environment
-        python -c "import sklearn; sklearn.show_versions()"
 
 Using an isolated environment such as pip venv or conda makes it possible to
 install a specific version of scikit-learn with pip or conda and its dependencies
diff --git a/doc/install_instructions_conda.rst b/doc/install_instructions_conda.rst
new file mode 100644
index 0000000000000..284a6925eeba9
--- /dev/null
+++ b/doc/install_instructions_conda.rst
@@ -0,0 +1,17 @@
+Install conda using the `Anaconda or miniconda installers
+<https://docs.conda.io/projects/conda/en/latest/user-guide/install/>`__ or the
+`miniforge installers <https://github.com/conda-forge/miniforge#miniforge>`__ (no
+administrator permission required for any of those). Then run:
+
+.. prompt:: bash
+
+  conda create -n sklearn-env -c conda-forge scikit-learn
+  conda activate sklearn-env
+
+In order to check your installation, you can use:
+
+.. prompt:: bash
+
+  conda list scikit-learn  # show scikit-learn version and location
+  conda list               # show all installed packages in the environment
+  python -c "import sklearn; sklearn.show_versions()"
diff --git a/doc/scss/install.scss b/doc/scss/install.scss
index 92e201f00a107..cb9c5357dea57 100644
--- a/doc/scss/install.scss
+++ b/doc/scss/install.scss
@@ -6,15 +6,55 @@
  * https://sass-lang.com/guide/
  */
 
-.install-instructions .sd-tab-set > label.sd-tab-label {
-  margin: 0;
-  text-align: center;
+.install-instructions .sd-tab-set {
+  .sd-tab-content {
+    padding: 0.5rem 0 0 0; // Vertical gap between the two sets of nested tabs
+    background-color: transparent;
+    border: none;
 
-  &.tab-6 {
-    width: 50% !important;
+    p:first-child {
+      margin-top: 1rem !important;
+    }
   }
 
-  &.tab-4 {
-    width: calc(100% / 3) !important;
+  > label.sd-tab-label {
+    margin: 0 3px; // Horizontal gap within the same set of tabs
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    border-radius: 5px !important;
+
+    &.tab-6 {
+      width: calc((100% - var(--tab-caption-width, 0%)) / 2 - 6px) !important;
+    }
+
+    &.tab-4 {
+      width: calc((100% - var(--tab-caption-width, 0%)) / 3 - 6px) !important;
+    }
+  }
+
+  > input:checked + label.sd-tab-label {
+    transform: unset;
+    border: 2px solid var(--pst-color-primary);
+  }
+
+  // Show tab captions on large screens
+  @media screen and (min-width: 960px) {
+    --tab-caption-width: 20%;
+
+    &::before {
+      width: var(--tab-caption-width);
+      display: flex;
+      align-items: center;
+      font-weight: bold;
+    }
+
+    &.tabs-os::before {
+      content: "Operating System";
+    }
+
+    &.tabs-packager::before {
+      content: "Package Manager";
+    }
   }
 }