well originally i used border image but then i remember border image doesnt work for rounded edges so instead i used:
.profile-avatar {
border-radius: 50%;
height: 200px;
width: 200px;
padding: 5px; /* for border thickness */
background: linear-gradient(#D60270 40%, #9B4F96 40% 60%, #0038A8 60%); /* bi flag colors yayyyy */
}
i looooove linear gradients theyre so easy to make so you can also use make other flags as needed <3