html version of breakpoint code example

Example 1: media query breakpoints

// Best Practice suggests
// keep default style for smallest screen size (portrait mobile, below 576px)
// and then proceed in assending order with media query like below

// Small devices (landscape phones, 576px and above till next break point)
@media (min-width: 576px) { ... }

// Medium devices (tablets, 768px and above till next break point)
@media (min-width: 768px) { ... }

// Large devices (desktops, 992px and above till next break point)
@media (min-width: 992px) { ... }

// so on ...

Example 2: bootstrap screen sizes

The Bootstrap grid system has four classes:
xs (for phones - screens less than 768px wide)
sm (for tablets - screens equal to or greater than 768px wide)
md (for small laptops - screens equal to or greater than 992px wide)
lg (for laptops and desktops - screens equal to or greater than 1200px wide)