.spark {
    background-color: #DE4A00;
    font-family: 'Helvetica', sans-serif;
    visibility: hidden;
    position: absolute;
    width: 4px;
    height: 4px;
    border-radius: 30%;
    box-shadow: 0 0 5px #AB000B;
    mix-blend-mode: lighten;
}