olehomelchenko.com/scss/_utilities.scss

// Global border-radius override (sharp corners principle)
* {
  border-radius: 0 !important;
}

// Remove any gradients from buttons
.btn {
  background-image: none !important;
  border-radius: 0 !important;
}

// Navbar - sharp corners, solid colors
.navbar {
  border-radius: 0 !important;
  background-image: none !important;
}

// Cards and panels
.card {
  border-radius: 0 !important;
}

// Code blocks
pre, code {
  border-radius: 0 !important;
}

// Quarto-specific elements
.quarto-title-block {
  border-radius: 0 !important;
}

// Input elements
input, select, textarea, button {
  border-radius: 0 !important;
}