Pure形式（Form）

HTML表单的简单CSS。

Default Form

要创建默认内联表单，请将pure-form该类名添加到任何<form>元素。

<form class="pure-form">
    <fieldset>
        <legend>A compact inline form</legend>

        <input type="email" placeholder="Email">
        <input type="password" placeholder="Password">

        <label for="remember">
            <input id="remember" type="checkbox"> Remember me
        </label>

        <button type="submit" class="pure-button pure-button-primary">Sign in</button>
    </fieldset>
</form>

Stacked Form

要在标签下创建一个带有输入元素的堆叠表单，请将pure-form-stacked类名添加到<form>元素旁边pure-form。

<form class="pure-form pure-form-stacked">
    <fieldset>
        <legend>A Stacked Form</legend>

        <label for="email">Email</label>
        <input id="email" type="email" placeholder="Email">
        <span class="pure-form-message">This is a required field.</span>

        <label for="password">Password</label>
        <input id="password" type="password" placeholder="Password">

        <label for="state">State</label>
        <select id="state">
            <option>AL</option>
            <option>CA</option>
            <option>IL</option>
        </select>

        <label for="remember" class="pure-checkbox">
            <input id="remember" type="checkbox"> Remember me
        </label>

        <button type="submit" class="pure-button pure-button-primary">Sign in</button>
    </fieldset>
</form>

Aligned Form

要创建一个对齐的表单，请将pure-form-aligned类名添加到<form>元素旁边pure-form。以对齐的形式，标签与表单输入控件对齐，但较小的屏幕恢复为堆叠形式。

<form class="pure-form pure-form-aligned">
    <fieldset>
        <div class="pure-control-group">
            <label for="name">Username</label>
            <input id="name" type="text" placeholder="Username">
            <span class="pure-form-message-inline">This is a required field.</span>
        </div>

        <div class="pure-control-group">
            <label for="password">Password</label>
            <input id="password" type="password" placeholder="Password">
        </div>

        <div class="pure-control-group">
            <label for="email">Email Address</label>
            <input id="email" type="email" placeholder="Email Address">
        </div>

        <div class="pure-control-group">
            <label for="foo">Supercalifragilistic Label</label>
            <input id="foo" type="text" placeholder="Enter something here...">
        </div>

        <div class="pure-controls">
            <label for="cb" class="pure-checkbox">
                <input id="cb" type="checkbox"> I've read the terms and conditions
            </label>

            <button type="submit" class="pure-button pure-button-primary">Submit</button>
        </div>
    </fieldset>
</form>

Multi-Column Form (with Pure Grids)

要创建多列表单，请将您的表单元素包含在纯网格中。创建响应式多列表单（如下面的示例）要求Pure Response网格存在于页面上。

Legend

<form class="pure-form pure-form-stacked">
    <fieldset>
        <legend>Legend</legend>

        <div class="pure-g">
            <div class="pure-u-1 pure-u-md-1-3">
                <label for="first-name">First Name</label>
                <input id="first-name" class="pure-u-23-24" type="text">
            </div>

            <div class="pure-u-1 pure-u-md-1-3">
                <label for="last-name">Last Name</label>
                <input id="last-name" class="pure-u-23-24" type="text">
            </div>

            <div class="pure-u-1 pure-u-md-1-3">
                <label for="email">E-Mail</label>
                <input id="email" class="pure-u-23-24" type="email" required>
            </div>

            <div class="pure-u-1 pure-u-md-1-3">
                <label for="city">City</label>
                <input id="city" class="pure-u-23-24" type="text">
            </div>

            <div class="pure-u-1 pure-u-md-1-3">
                <label for="state">State</label>
                <select id="state" class="pure-input-1-2">
                    <option>AL</option>
                    <option>CA</option>
                    <option>IL</option>
                </select>
            </div>
        </div>

        <label for="terms" class="pure-checkbox">
            <input id="terms" type="checkbox"> I've read the terms and conditions
        </label>

        <button type="submit" class="pure-button pure-button-primary">Submit</button>
    </fieldset>
</form>

Grouped Inputs

要对一组基于文本的输入元素进行分组，请将它们包装在<fieldset>带有pure-group类名的元素中。分组输入在注册表单上工作良好，在移动设备上看起来很自然。

<form class="pure-form">
    <fieldset class="pure-group">
        <input type="text" class="pure-input-1-2" placeholder="Username">
        <input type="text" class="pure-input-1-2" placeholder="Password">
        <input type="email" class="pure-input-1-2" placeholder="Email">
    </fieldset>

    <fieldset class="pure-group">
        <input type="text" class="pure-input-1-2" placeholder="A title">
        <textarea class="pure-input-1-2" placeholder="Textareas work too"></textarea>
    </fieldset>

    <button type="submit" class="pure-button pure-input-1-2 pure-button-primary">Sign in</button>
</form>

Input Sizing

输入元素具有类似于纯网格的语法中的流体宽度大小。您可以将pure-input-*类应用于这些元素。

<form class="pure-form">
    <input class="pure-input-1" type="text" placeholder=".pure-input-1"><br>
    <input class="pure-input-2-3" type="text" placeholder=".pure-input-2-3"><br>
    <input class="pure-input-1-2" type="text" placeholder=".pure-input-1-2"><br>
    <input class="pure-input-1-3" type="text" placeholder=".pure-input-1-3"><br>
    <input class="pure-input-1-4" type="text" placeholder=".pure-input-1-4"><br>
 </form>

您可以通过将它们包装在网格容器中来进一步控制输入尺寸。在下面的示例中，<input>元素有一个pure-input-1类，但是<div>用特定的网格类包装。

<form class="pure-form pure-g">
    <div class="pure-u-1-4">
        <input class="pure-input-1" type="text" placeholder=".pure-u-1-4">
    </div>
    <div class="pure-u-3-4">
        <input class="pure-input-1" type="text" placeholder=".pure-u-3-4">
    </div>

    <div class="pure-u-1-2">
        <input class="pure-input-1" type="text" placeholder=".pure-u-1-2">
    </div>
    <div class="pure-u-1-2">
        <input class="pure-input-1" type="text" placeholder=".pure-u-1-2">
    </div>

    <div class="pure-u-1-8">
        <input class="pure-input-1" type="text" placeholder=".pure-u-1-8">
    </div>
    <div class="pure-u-1-8">
        <input class="pure-input-1" type="text" placeholder=".pure-u-1-8">
    </div>
    <div class="pure-u-1-4">
        <input class="pure-input-1" type="text" placeholder=".pure-u-1-4">
    </div>
    <div class="pure-u-1-2">
        <input class="pure-input-1" type="text" placeholder=".pure-u-1-2">
    </div>

    <div class="pure-u-1-5">
        <input class="pure-input-1" type="text" placeholder=".pure-u-1-5">
    </div>
    <div class="pure-u-2-5">
        <input class="pure-input-1" type="text" placeholder=".pure-u-2-5">
    </div>
    <div class="pure-u-2-5">
        <input class="pure-input-1" type="text" placeholder=".pure-u-2-5">
    </div>

    <div class="pure-u-1">
        <input class="pure-input-1" type="text" placeholder=".pure-u-1">
    </div>
</form>

Required Inputs

要根据需要标记表单控件，请添加required属性。

<form class="pure-form">
    <input type="email" placeholder="Requires an email" required>
</form>

Disabled Inputs

要禁用表单控件，请添加该disabled属性。

<form class="pure-form">
    <input type="text" placeholder="Disabled input here..." disabled>
</form>

Read-Only Inputs

要使表单输入为只读，请添加readonly属性。之间的差异disabled和readonly是只读的投入仍然可获得焦点。这允许人们与输入交互并选择其文本，而禁用的控件不是交互式的。

<form class="pure-form">
    <input type="text" value="Readonly input here..." readonly>
</form>

Rounded Inputs

要显示带有圆角的窗体控件，请添加pure-input-rounded类名。

<form class="pure-form">
    <input type="text" class="pure-input-rounded">
    <button type="submit" class="pure-button">Search</button>
</form>

Checkboxes and Radios

要对复选框和无线电输入进行归一化和对齐，请添加pure-checkbox或分类名称pure-radio。

<form class="pure-form">
    <label for="option-one" class="pure-checkbox">
        <input id="option-one" type="checkbox" value="">
        Here's option one.
    </label>

    <label for="option-two" class="pure-radio">
        <input id="option-two" type="radio" name="optionsRadios" value="option1" checked>
        Here's a radio button. You can choose this one..
    </label>

    <label for="option-three" class="pure-radio">
        <input id="option-three" type="radio" name="optionsRadios" value="option2">
        ..Or this one!
    </label>
</form>