bootstrap(响应式)加减输入框
<
div
class
=
"row"
>
<
div
class
=
"col-lg-6"
>
<
div
class
=
"input-group"
>
<
span
class
=
"input-group-btn"
>
<
button
class
=
"btn btn-default"
type
=
"button"
>-</
button
>
</
span
>
<
input
type
=
"text"
class
=
"form-control"
placeholder
=
"2"
>
<
span
class
=
"input-group-btn"
>
<
button
class
=
"btn btn-default"
type
=
"button"
>+</
button
>
</
span
>
</
div
>
</
div
>
</
div
>