Intro of BEM

Estimated reading time: 1 minute

What is BEM ?

BEM stand for Block Element Modifier , Block__Element--Modifier . It is a methodology that helps you to create reusable components and code sharing in front-end development .

It is developed by the team at Yandex .

  • ex:
.block {}
.block__element {}
.block--modifier {}
  • ex:
/* Block component */
.btn {}

/* Element that depends upon the block */
.btn__course {}

/* Modifier that changes the style of the block */
.btn--success {}
.btn--info {}
  • ex

.block__element--modifier this is proper pattern of bem .

<form class="search">
  <div class="search__wrapper">
    <label for="s" class="search__label">Search for: </label>
    <input type="text" id="s" class="search__input"/>
    <button type="submit" class="search__submit btn--info">Search</button>

why use BEM

  • It’s easy for new team members to read the markup and CSS, and understand its behavior
  • Adding more developers increases team productivity
  • Consistent naming reduces the possibility of class name collisions and side effects
  • CSS is independent of markup
  • CSS is highly reusable

BEM Practise :

css, bem, ui, ux