I assume that you mean the hover of the links, so here's my code! feel free to change anything if needed.

———

a:hover {
webkit-filter: blur(0.5px);
filter: blur(1px);
transition: 0.25s ease-in;
}
a:hover {
letter-spacing: 1.5px;
transition: 0.3s;
}
a {
letter-spacing: normal;
transition: 0.3s;
}