html - How to make a ccs transition only forward -


I have an app that changes from opacity 0 to opacity 1 if you hover a div, then I get the CSS transition How can i 2 for "0 to 1" opacity change and not for "1 to 0"

You can do this by simply adding CSS to the transition to Hover State CSS.

HTML 
  
 gt; & Lt; / Div & gt;   
 CSS  
  div {width: 100px; Height: 100 pixels; Background: green; } div: Hover {Opacity: 0; Transition: Opacity .2s; }   
 demo

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