<!DOCTYPE html>
<
html
lang
=
"en"
>
<
head
>
<
meta
charset
=
"UTF-8"
/>
<
meta
name
=
"viewport"
content
=
"width=device-width, initial-scale=1.0"
/>
<
link
rel
=
"stylesheet"
href
=
integrity
=
"sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm"
crossorigin
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"anonymous"
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integrity
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crossorigin
=
"anonymous"
>
</
script
>
<
script
src
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integrity
=
"sha384-UO2eT0CpHqdSJQ6hJty5KVphtPhzWj9WO1clHTMGa3JDZwrnQq4sF86dIHNDz0W1"
crossorigin
=
"anonymous"
>
</
script
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<
script
src
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integrity
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crossorigin
=
"anonymous"
>
</
script
>
</
head
>
<
body
>
<
div
class
=
"accordion"
id
=
"accordionExample"
>
<
div
class
=
"card"
>
<
div
class
=
"card-header"
id
=
"headingOne"
>
<
h2
class
=
"mb-0"
>
<
button
class
=
"btn btn-link"
type
=
"button"
data-toggle
=
"collapse"
data-target
=
"#collapseOne"
aria-expanded
=
"true"
aria-controls
=
"collapseOne"
>
Collapsible Group Item #1
</
button
>
</
h2
>
</
div
>
<
div
id
=
"collapseOne"
class
=
"collapse show"
aria-labelledby
=
"headingOne"
data-parent
=
"#accordionExample"
>
<
div
class
=
"card-body"
>
Bootstrap is a free and open-source tool
collection for creating responsive websites
and web applications. It is the most popular
HTML, CSS, and JavaScript framework for
developing responsive, mobile-first web sites.
Nowadays, the websites are perfect for all
the browsers (IE, Firefox and Chrome) and
for all sizes of screens (Desktop, Tablets,
Phablets, and Phones). All thanks to Bootstrap
developers – Mark Otto and Jacob Thornton of
Twitter, though it was later declared to be
an open-source project.
</
div
>
</
div
>
</
div
>
<
div
class
=
"card"
>
<
div
class
=
"card-header"
id
=
"headingTwo"
>
<
h2
class
=
"mb-0"
>
<
button
class
=
"btn btn-link collapsed"
type
=
"button"
data-toggle
=
"collapse"
data-target
=
"#collapseTwo"
aria-expanded
=
"false"
aria-controls
=
"collapseTwo"
>
Collapsible Group Item #2
</
button
>
</
h2
>
</
div
>
<
div
id
=
"collapseTwo"
class
=
"collapse"
aria-labelledby
=
"headingTwo"
data-parent
=
"#accordionExample"
>
<
div
class
=
"card-body"
>
Bootstrap is a free and open-source tool
collection for creating responsive websites
and web applications. It is the most popular
HTML, CSS, and JavaScript framework for
developing responsive, mobile-first web sites.
Nowadays, the websites are perfect for all
the browsers (IE, Firefox and Chrome) and
for all sizes of screens (Desktop, Tablets,
Phablets, and Phones). All thanks to Bootstrap
developers – Mark Otto and Jacob Thornton of
Twitter, though it was later declared to be
an open-source project.
</
div
>
</
div
>
</
div
>
<
div
class
=
"card"
>
<
div
class
=
"card-header"
id
=
"headingThree"
>
<
h2
class
=
"mb-0"
>
<
button
class
=
"btn btn-link collapsed"
type
=
"button"
data-toggle
=
"collapse"
data-target
=
"#collapseThree"
aria-expanded
=
"false"
aria-controls
=
"collapseThree"
>
Collapsible Group Item #3
</
button
>
</
h2
>
</
div
>
<
div
id
=
"collapseThree"
class
=
"collapse"
aria-labelledby
=
"headingThree"
data-parent
=
"#accordionExample"
>
<
div
class
=
"card-body"
>
Bootstrap is a free and open-source tool
collection for creating responsive websites
and web applications. It is the most popular
HTML, CSS, and JavaScript framework for
developing responsive, mobile-first web sites.
Nowadays, the websites are perfect for all
the browsers (IE, Firefox and Chrome) and
for all sizes of screens (Desktop, Tablets,
Phablets, and Phones). All thanks to Bootstrap
developers – Mark Otto and Jacob Thornton of
Twitter, though it was later declared to be
an open-source project.
</
div
>
</
div
>
</
div
>
</
div
>
<
script
>
if (location.hash !== null && location.hash !== "") {
$(location.hash + ".collapse").collapse("show");
}
</
script
>
</
body
>
</
html
>