body.login div#login h1 a {
    background-image: url(../images/adsta.png);
}

#wpadminbar::before,
#wpadminbar ul #wp-admin-bar-menu-toggle::before {
    content: url(../images/adsta.png);
}

body.login div#login h1 a {
    background-size: auto;
    width: auto;
}

#wpadminbar::before {
    float: left;
    margin: 12px 10px 0 10px;
}

#wpadminbar ul #wp-admin-bar-menu-toggle::before {
    float: right;
    margin: 12px 10px 0 10px;
}