need help with css

[phil3001]

Good evening,

 

I have a problem with css and not strong at all, I need advice

 

Cart button is called by the class: ajoutpanier

 

my website : http://www.eurodeal4u.fr/fr/chaussures-homme-/109-converse-port-royale.html

 

my css code is this:

 

input.ajoutpanier {
background-color: transparent;
background-image:url("/img/ajoutpanier.png");
background-repeat:no-repeat;
height:4em;
width:184px;
margin-top: 10px;
border:none;
cursor:pointer;
position:relative;
}

 

my big worry is that once clicked it turns blue

 

 

 

 

how to make my button is still the same?

 

thank you in advance