@font-face {
    font-family: 'OPPOSans';
    src:url('./OPPOSans/OPPOSans-Bold.ttf') format('truetype');
    font-weight: bold;
    font-display: swap;
}
@font-face {
    font-family: 'OPPOSans';
    src:url('./OPPOSans/OPPOSans-M.ttf') format('truetype');
    font-weight: 500;
    font-display: swap;
}