.avatar {
    --avatar-size: 32px;
    width: var(--avatar-size);
    height: var(--avatar-size);
    border-radius: 100px;
    overflow: hidden;
    flex-shrink: 0;
    -moz-user-select: none;
    -webkit-user-select: none;
    -ms-user-select: none;
    user-select: none;
    line-height: var(--avatar-size);
    font-size: calc(var(--avatar-size) * 0.6);
    text-align: center;
    letter-spacing: calc(var(--avatar-size) * -0.05);
    background: white;
    color: black;
}

.avatar.large {
    --avatar-size: 40px;
}

.avatar img {
    width: 100%;
    height: 100%;
}