.image-container {
    position: relative;
    display: inline-block;
}

    .image-container img {
        width: 100%;
        display: block;
    }

    .image-container::after {
        content: "";
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 150, 255, 0.3);
        mix-blend-mode: overlay;
    }