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core.css v0.3.0 – Documentation

Forms

The Core style set offers a framework with which you can easily construct forms that follow the standard form layout and design.

Note: This documentation assumes that you have an understanding of HTML forms. It will not go into detail as to how forms are constructed, but rather explain the specifics of the Core-related form styles.

  1. Form Wrapper
  2. Form Themes
    1. Blue Form Theme
    2. White Form Theme
  3. Form Structure
  4. Form Elements
    1. Text Inputs
    2. Select Fields
    3. Radio Buttons
    4. Checkboxes
    5. Submit Buttons
    6. Errors
    7. Labels for Required Inputs
  5. Status Messages
  6. HTML5 Validation

Form Wrapper

If you want to build a standard form, you will need to apply the class .form to your form element.

Form wrapper 
<form action="#" class="form"></form>

Form Themes

There are different themes available for your forms. They are applied with a .form-theme-* class on the form element.

With no specific theme defined, your form will have a transparent background. Adding a theme will give your form a colored background and apply certain other visual effects, like separators between fieldsets, paddings, rounded corners, etc.

Form themes will only alter the appearance of the form wrapper and its fieldsets. Everything else is up to the developer.

Blue Form Theme

The blue form theme is the standard theme for forms on light backgrounds.

Blue form 
<form action="#" class="form form-theme-blue">
    <h4>Blue Form</h4>
    <fieldset>
        <input type="text" class="input-text" />
    </fieldset>
    <fieldset>
        <input type="submit" class="button-lightblue" value="Submit" />
    </fieldset>
</form>

Blue Form

White Form Theme

The white form theme is for forms that are set on dark backgrounds.

White form (Background added for demonstrational purposes.) 
<form action="#" class="form form-theme-white">
    <h4>White Form</h4>
    <fieldset>
        <input type="text" class="input-text" />
    </fieldset>
    <fieldset>
        <input type="submit" class="button-lightblue" value="Submit" />
    </fieldset>
</form>

White Form

Form Structure

Forms are structured using the grid layout described in the Grid section. All inputs are 100% wide in the standard .form layout. You can adjust their sizes through the grid items that they are wrapped in.

Basic form using the grid layout
<form action="#" class="form form-theme-blue">
  <h3>Demo Form</h3>
  <fieldset>
    <div class="grid gutter-s">
      <div class="grid-item one-fourth">
        <label for="input1">Label 1</label>
      </div>
      <div class="grid-item one-fourth">
        <select id="input1" class="select">
          <option>Option</option>
          <option>Awption</option>
        </select>
      </div>
    </div>
    <div class="grid gutter-s">
      <div class="grid-item one-fourth">
        <label for="input2">Label 2</label>
      </div>
      <div class="grid-item three-fourths">
        <input type="text" id="input2" class="input-text" />
      </div>
    </div>
    <div class="grid gutter-s">
      <div class="grid-item one-fourth">
        <label for="input3">Label 3</label>
      </div>
      <div class="grid-item three-fourths">
        <input type="text" id="input3" class="input-text" />
      </div>
    </div>
    <div class="grid gutter-horizontal-s">
      <div class="grid-item three-fourths push-one-fourth">
        <ul>
          <li>
            <input type="checkbox" id="input4" />
            <label for="input4">Label 4</label>
          </li>
          <li>
            <input type="checkbox" id="input5" />
            <label for="input5">Label 5</label>
          </li>
        </ul>
      </div>
    </div>
  </fieldset>
  <fieldset>
    <div class="grid gutter-s">
      <div class="grid-item one-fourth">
        <label for="input6">Lbl 6</label>
        /
        <label for="input7">Lbl 7</label>
      </div>
      <div class="grid-item one-eighth">
        <input type="text" id="input6" class="input-text" />
      </div>
      <div class="grid-item five-eighths">
        <input type="text" id="input7" class="input-text" />
      </div>
    </div>
    <div class="grid gutter-s">
      <div class="grid-item one-fourth">
        <label for="input8">Lbl 8</label>
        /
        <label for="input9">Lbl 9</label>
      </div>
      <div class="grid-item five-eighths">
        <input type="text" id="input8" class="input-text" />
      </div>
      <div class="grid-item one-eighth">
        <input type="text" id="input9" class="input-text" />
      </div>
    </div>
  </fieldset>
  <fieldset>
    <input type="submit" class="button-lightblue float-right" value="Submit" />
  </fieldset>
</form>

Demo Form

/
/

Form Elements

There are standard definitions for all common form elements. The sections below will show examples of each.

Text Inputs

All text inputs, including type="email", type="tel", etc., get the class .input-text.

Text inputs
<input type="text" class="input-text" />

<input type="email" class="input-text" />

You can attach unit icons to your text inputs to give the user an additional hint about what is asked of him. To apply a unit icon, give your text input the additional class .input-unit and insert a FontAwesome icon after it with the class .unit-icon.

Text input with icon
<input type="text" class="input-text input-unit" /><span class="unit-icon fa fa-euro"></span>

Please note that any whitespace between the input and the text (such as line breaks) will cause the icon to be positioned a bit more to the right.

Select Fields

Select fields get the class .select.

Select fields
<select class="select">
    <optgroup label="Fruit">
        <option>Apples</option>
        <option>Bananas</option>
        <option>Carrots</option>
    </optgroup>
    <optgroup label="Vegetables!">
        <option>Potatoes</option>
        <option>Radishes</option>
    </optgroup>
</select>

Radio Buttons

For radio buttons, the input gets the class .input-radio and the label gets the class .label-radio.

Radio buttons
<ul>
    <li>
        <input type="radio" class="input-radio" id="apple" name="fruit" checked />
        <label for="apple" class="label-radio">Apple</label>
    </li>
    <li>
        <input type="radio" class="input-radio" id="banana" name="fruit" />
        <label for="banana" class="label-radio">Banana</label>
    </li>
</ul>

Checkboxes

For checkboxes, the input gets the class .input-checkbox and the label gets the class .label-checkbox.

Checkboxes
<ul>
    <li>
        <input type="checkbox" class="input-checkbox" id="pears" checked />
        <label for="pears" class="label-radio">Pears</label>
    </li>
    <li>
        <input type="checkbox" class="input-checkbox" id="cheese" />
        <label for="cheese" class="label-radio">Cheese</label>
    </li>
    <li>
        <input type="checkbox" class="input-checkbox" id="car-battery" />
        <label for="car-battery" class="label-radio">Car battery</label>
    </li>
</ul>

Submit Buttons

You can use any of the globally available buttons as form submit buttons. Please see the Buttons section for more information.
(Note that you cannot put icons on buttons made from <input type="submit" />.)

Move buttons around with the .float-* classes.

Submit buttons
<form action="#" class="form form-theme-blue">
    <fieldset>
        <input type="text" class="input-text" />
    </fieldset>
    <fieldset>
        <input type="submit" class="button-orange float-right" value="Submit" />
    </fieldset>
</form>

Errors

You can show labels and inputs as having errors by adding the .error class.

Inputs with errors
<label class="error">Label</label>
<input type="text" class="input-text error" />

<select class="select error">
    <option>Option</option>
</select>

<input type="radio" class="input-radio error" />
<label class="label-radio error">Label</label>

<input type="checkbox" class="input-checkbox error" />
<label class="label-checkbox error">Label</label>

Labels for Required Inputs

Attaching the class .required to labels will (visually) designate the corresponding input as required.

Required inputs
<label class="required">Label</label>
<input type="text" required class="input-text" />

Status Messages

If you want a form to give feedback to the user, you may use one of the four status messages.

Please see the Status Messages section for a full description.

Form with error message
<div class="status-message status-error margin-bottom-s">
    <h4>Error!</h4>
    <p>
        You fail at using forms. Shame on you.
    </p>
</div>

Error!

You fail at using forms. Shame on you.

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HTML5 Validation

The HTML5 Constraint Validation API brings some powerful (if not consistently supported) tools to validate a user's form input on the client side.

We recommend using the Webshims polyfill as a fallback for legacy browsers who do not natively support the HTML5 Validation API.

Form with HTML5 Contraint Validation

A Form

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