.img-container {
    position: relative;
    width:  240px;
    height: 240px;
}

.img-container::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;

    background: linear-gradient(to top, #ffb3b3, #d1a7f0);
    mix-blend-mode: multiply;
    z-index: 1;
    pointer-events: none;
}

.dragclass {
    width: 100%;
    height: auto;
    opacity: 0;
    transition: opacity 0.5s ease-in;
}

.dragclass.loaded {
    opacity: 1;
}

.img-container:hover .dragclass {
    opacity: 0.8;
    animation: neonBlink 1s infinite alternate;
}

@keyframes neonBlink {
    0% {
        opacity: 1;
    }
    10% {
        opacity: 1;
    }
    20% {
        opacity: 0.2;
    }
    30% {
        opacity: 1;
    }
    40% {
        opacity: 0.8;
    }
    50% {
        opacity: 1; 
    }
    60% {
        opacity: 1;
    }
    70% {
        opacity: 0.9; 
    }
    80% {
        opacity: 0.9; 
    }
    90% {
        opacity: 1; 
    }
    100% {
        opacity: 1;
    }
}