function my_login_logo() { ?>
    <style type="text/css">
        #login h1 a, .login h1 a {
            background-image: url(https://tifsa.com.br/wp-content/themes/child-theme/images/logo.png);
		height:65px;
		width:320px;
		background-size: 320px 65px;
		background-repeat: no-repeat;
        	padding-bottom: 30px;
        }
    </style>