body {
    background-color: #f8f9ff;
    background-image: 
        linear-gradient(135deg, rgba(103,119,239,0.05) 25%, transparent 25%),
        linear-gradient(225deg, rgba(103,119,239,0.05) 25%, transparent 25%),
        linear-gradient(45deg, rgba(103,119,239,0.05) 25%, transparent 25%),
        linear-gradient(315deg, rgba(103,119,239,0.05) 25%, #f8f9ff 25%);
    background-size: 60px 60px;
}