.site-header {  

    background-image: 
        linear-gradient(90deg, rgba(255,250,244,0.9) 0%, rgba(239,231,219,0.8) 30%, rgba(239,231,219,0.2) 40%, rgba(239,231,219,0.9) 60%, rgba(239,231,219,0.9) 100%),
        url('../images/inside_1.jpg');
}