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---
id: bad87fee1348cd8acef08813
title: 可選操作樣式 btn-info
challengeType: 0
forumTopicId: 16770
dashedName: call-out-optional-actions-with-btn-info
---
# --description--
Bootstrap 有着豐富的預定義按鈕顏色。 淺藍色的 `btn-info` class 通常用在備選操作上。
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在 `Like` 按鈕下方使用文本 `Info` 創建一個新的塊級 Bootstrap 按鈕,並向其中添加 Bootstrap 的 `btn-info` 類。
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注意:這些按鈕仍然需要 `btn` 和 `btn-block` class。
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# --hints--
應創建一個新的包含 `Info` 文本的 `button` 元素。
```js
assert(new RegExp('info', 'gi').test($('button').text()));
```
兩個按鈕的 class 屬性應該包含 `btn` 和 `btn-block` 。
```js
assert($('button.btn-block.btn').length > 1);
```
新按鈕的 class 屬性應該含有 `btn-info` 。
```js
assert($('button').hasClass('btn-info'));
```
確保所有的 `button` 元素都有一個閉合標籤。
```js
assert(
code.match(/< \/button > /g) &&
code.match(/< button / g ) & &
code.match(/< \/button > /g).length === code.match(/< button / g ). length
);
```
# --seed--
## --seed-contents--
```html
< link href = "https://fonts.googleapis.com/css?family=Lobster" rel = "stylesheet" type = "text/css" >
< style >
.red-text {
color: red;
}
h2 {
font-family: Lobster, Monospace;
}
p {
font-size: 16px;
font-family: Monospace;
}
.thick-green-border {
border-color: green;
border-width: 10px;
border-style: solid;
border-radius: 50%;
}
.smaller-image {
width: 100px;
}
< / style >
< div class = "container-fluid" >
< h2 class = "red-text text-center" > CatPhotoApp< / h2 >
< p > Click here for < a href = "#" > cat photos< / a > .< / p >
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< a href = "#" > < img class = "smaller-image thick-green-border" src = "https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt = "A cute orange cat lying on its back." > < / a >
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< img src = "https://cdn.freecodecamp.org/curriculum/cat-photo-app/running-cats.jpg" class = "img-responsive" alt = "Three kittens running towards the camera." >
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< button class = "btn btn-block btn-primary" > Like< / button >
< p > Things cats love:< / p >
< ul >
< li > cat nip< / li >
< li > laser pointers< / li >
< li > lasagna< / li >
< / ul >
< p > Top 3 things cats hate:< / p >
< ol >
< li > flea treatment< / li >
< li > thunder< / li >
< li > other cats< / li >
< / ol >
< form action = "https://freecatphotoapp.com/submit-cat-photo" >
< label > < input type = "radio" name = "indoor-outdoor" > Indoor< / label >
< label > < input type = "radio" name = "indoor-outdoor" > Outdoor< / label >
< label > < input type = "checkbox" name = "personality" > Loving< / label >
< label > < input type = "checkbox" name = "personality" > Lazy< / label >
< label > < input type = "checkbox" name = "personality" > Crazy< / label >
< input type = "text" placeholder = "cat photo URL" required >
< button type = "submit" > Submit< / button >
< / form >
< / div >
```
# --solutions--
```html
< link href = "https://fonts.googleapis.com/css?family=Lobster" rel = "stylesheet" type = "text/css" >
< style >
.red-text {
color: red;
}
h2 {
font-family: Lobster, Monospace;
}
p {
font-size: 16px;
font-family: Monospace;
}
.thick-green-border {
border-color: green;
border-width: 10px;
border-style: solid;
border-radius: 50%;
}
.smaller-image {
width: 100px;
}
< / style >
< div class = "container-fluid" >
< h2 class = "red-text text-center" > CatPhotoApp< / h2 >
< p > Click here for < a href = "#" > cat photos< / a > .< / p >
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< a href = "#" > < img class = "smaller-image thick-green-border" src = "https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt = "A cute orange cat lying on its back." > < / a >
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< img src = "https://cdn.freecodecamp.org/curriculum/cat-photo-app/running-cats.jpg" class = "img-responsive" alt = "Three kittens running towards the camera." >
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< button class = "btn btn-block btn-primary" > Like< / button >
< button class = "btn btn-block btn-info" > Info< / button >
< p > Things cats love:< / p >
< ul >
< li > cat nip< / li >
< li > laser pointers< / li >
< li > lasagna< / li >
< / ul >
< p > Top 3 things cats hate:< / p >
< ol >
< li > flea treatment< / li >
< li > thunder< / li >
< li > other cats< / li >
< / ol >
< form action = "https://freecatphotoapp.com/submit-cat-photo" >
< label > < input type = "radio" name = "indoor-outdoor" > Indoor< / label >
< label > < input type = "radio" name = "indoor-outdoor" > Outdoor< / label >
< label > < input type = "checkbox" name = "personality" > Loving< / label >
< label > < input type = "checkbox" name = "personality" > Lazy< / label >
< label > < input type = "checkbox" name = "personality" > Crazy< / label >
< input type = "text" placeholder = "cat photo URL" required >
< button type = "submit" > Submit< / button >
< / form >
< / div >
```