1. Add the HTML5 doctype
Of course. Bootstrap uses HTML elements and CSS properties that require the HTML5 doctype.
Always include the HTML5 doctype at the beginning of the page, along with the lang attribute and the correct character set: <!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
</head>
</html>
2. Bootstrap 3 is mobile-first
Bootstrap 3 is designed to be responsive to mobile devices. Mobile-first styles are part of the core framework.
To ensure proper rendering and touch zooming, add the following
<meta> tag inside the
<head> element:<meta name="viewport" content="width=device-width, initial-scale=1">
The
width=device-width part sets the width of the page to follow the screen-width
of the device (that will vary depending on the device).The
initial-scale=1 part sets the initial zoom level when the page is first loaded
by the browser.- 3. Containers
- The
.container-fluidclass provides a full width container, spanning the entire width of the viewport.
Bootstrap also requires a containing element to wrap site contents.
There are two container classes to choose from:
The
.container class provides a responsive fixed width container
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