#wpadminbar #wp-admin-bar-a4aff_custom_wp_toolbar_credits_remaining .ab-icon:before {
content: '\f301';
color: transparent;
top: 5px;
height: 15px;
width: 15px;
background: url(//www.ziptuning.fr/wp-content/plugins/all4affiliates/assets/images/logo-letter-white.png);
background-position: center;
background-repeat: no-repeat;
background-size: cover;
display: block;
}