.rsh-highlight-line {
    color: var(--rsh-dim, #555);
    background-image: linear-gradient(to right, var(--rsh-color, #fff), var(--rsh-color, #fff));
    background-repeat: no-repeat;
    background-size: 0% 100%;
    -webkit-background-clip: text;
    background-clip: text;
}