diff --git a/1-gui/README.md b/1-gui/README.md
index 9af7ccd916d5cba72e54cc1584c9baa1162e1c7f..c329bc9645442019574a19190cbcfbb8110c66ce 100644
--- a/1-gui/README.md
+++ b/1-gui/README.md
@@ -22,8 +22,17 @@ The web interface is available at [https://cloud.muni.cz](https://cloud.muni.cz)
 To sign in,
 * select `ENIFRA CESNET`,
 * click on `Sign In`,
+{% reveal text="Show Screenshot" %}
+  ![](/1-gui/sign_in1.png)
+{% endreveal %}
 * select your institution from the drop-down list (use the search box at the top as a filter),
+{% reveal text="Show Screenshot" %}
+  ![](/1-gui/sign_in2.png)
+{% endreveal %}
 * provide your institution-specific sign-in credentials,
+{% reveal text="Show Screenshot" %}
+  ![](/1-gui/sign_in3.png)
+{% endreveal %}
 * wait to be redirected back to our web interface.
 
 ## Create Key Pair
diff --git a/1-gui/sign_in1.png b/1-gui/sign_in1.png
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diff --git a/1-gui/sign_in2.png b/1-gui/sign_in2.png
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diff --git a/1-gui/sign_in3.png b/1-gui/sign_in3.png
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