.myStyle {
    position: relative; 
    border-radius: 5px;
    z-index: 1;
}


.myStyle::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 5px;
    box-shadow: 0 0 12px blue;
    z-index: -1;
    will-change: opacity;
    animation: shadowAnimate 2s ease-in-out infinite;
}

@keyframes shadowAnimate {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 1; }
}
label[for^="cart-payment-method-online-198914047"]{
    padding: 18px 22px !important;
    border: 2px solid #bfc6ff !important;
    border-radius: 12px !important;
    background: #fff !important;
    font-weight: 700 !important;
    color: #333 !important;
    cursor: pointer;

    animation: borderPulse 1.8s ease-in-out infinite;
}

@keyframes borderPulse{
    0%,100%{
        border-color:#bfc6ff;
        box-shadow:0 0 6px rgba(104,91,255,.15);
    }

    25%{
        border-color:#7b6cff;
        box-shadow:0 0 12px rgba(104,91,255,.35);
    }

    50%{
        border-color:#5b4fff;
        box-shadow:0 0 18px rgba(104,91,255,.55);
    }

    75%{
        border-color:#7b6cff;
        box-shadow:0 0 12px rgba(104,91,255,.35);
    }
}