update md

1 files changed, 9 insertions, 8 deletions

diff --git a/pres.md b/pres.md
index 277d9db..7b3cec2 100644
--- a/pres.md
+++ b/pres.md
@@ -33,7 +33,7 @@ navigationMode: linear
 
 ## 
 
-![](img/shellyplus2pm_front.jpg){style="height: 50vh;"}
+<p class="stretch"><img src="img/shellyplus2pm_front.jpg" /></p>
 
 ## The Problem
 
@@ -90,7 +90,8 @@ How to access data on Shelly devices?
 
 ## 
 
-![](img/shellyplus2pm_back.jpg){style="height: 50vh;"}
+<p class="stretch"><img src="img/shellyplus2pm_back.jpg" /></p>
+
 
 ::: notes
 - connect to pins for rx/tx and gpio0/rst
@@ -98,11 +99,11 @@ How to access data on Shelly devices?
 
 ## 
 
-![](img/shellyplus2pm_open.jpg){style="height: 50vh;"}
+<p class="stretch"><img src="img/shellyplus2pm_open.jpg" /></p>
 
 ## 
 
-![](img/shellybutton1_open.png){style="height: 50vh;"}
+<p class="stretch"><img src="img/shellybutton1_open.png" /></p>
 
 ## 
 
@@ -118,7 +119,7 @@ How to access data on Shelly devices?
 
 ## 
 
-![](img/serial_cmds.png){style="height: 50vh;"}
+<p class="stretch"><img src="img/serial_cmds.png" /></p>
 
 <small>https://docs.espressif.com/projects/esptool/en/latest/esp32/advanced-topics/serial-protocol.html</small>
 
@@ -269,12 +270,12 @@ SUM:                 60        2686        2445       28584
 
 ## 
 
-![](img/slip.png){style=""}
+![](img/slip.png)
 
 ## 
 
-![](img/packet_req.png){style="background-color:white;"}
-![](img/packet_res.png){style="background-color:white;"}
+![](img/packet_req.png)
+![](img/packet_res.png)
 
 <small>https://docs.espressif.com/projects/esptool/en/latest/esp32/advanced-topics/serial-protocol.html</small>