fix gfx

README.md

@@ -10,8 +10,10 @@ control LEDs in simple (**on**/**off**) and complex (**blinking**,
 JLed got some [coverage on Hackaday](https://hackaday.com/2018/06/13/simplifying-basic-led-effects/)
 and someone did a [video tutorial for JLed](https://youtu.be/x5V2vdpZq1w)  - Thanks!
 
-[![breathing, blinking, fadeon and -off at the same time](doc/jled.gif)](examples/multiled)
-[![jled in the web](doc/jled-wasm.png)](https://jandelgado.github.io/jled-wasm)
+<p float="left">
+<a href="examples/multiled"><img alt="breathing, blinking, fadeon and -off at the same time" width=500 src="doc/jled.gif"></a>
+<a href="https://jandelgado.github.io/jled-wasm"><img alt="jled running in the browser" width=500  src="doc/jled-wasm.png"></a>
+</p>
 
 ## Example