Tryit Editor v1.8

Source Code:
<!DOCTYPE html> <html> <head> <style> html {height:100%;} body {height:100%;} img.normal {height:auto;} img.big {height:40%;} img.small {height:10%;} </style> </head> <body> <img class="normal" src="logocss.gif" width="95" height="84" /><br> <img class="big" src="logocss.gif" width="95" height="84" /><br> <img class="small" src="logocss.gif" width="95" height="84" /> </body> </html>
Result:
W3Schools.com - Try it yourself