Html 使水平单选按钮小部件具有固定宽度

我的页面中有一个水平单选按钮小部件，如下所示：

<form>
  <fieldset data-role="controlgroup" data-type="horizontal" data-mini="true">
    <input name="tool-selector" id="tool-selector-1" value="1" type="radio" checked>
    <label for="tool-selector-1">1</label>
    <input name="tool-selector" id="tool-selector-2" value="2" type="radio">
    <label for="tool-selector-2">2</label>
    <input name="tool-selector" id="tool-selector-3" value="3" type="radio">
    <label for="tool-selector-3">3</label>
    <input name="tool-selector" id="tool-selector-4" value="4" type="radio">
    <label for="tool-selector-4">4</label>
    <input  name="tool-selector" id="tool-selector-5" value="5" type="radio">
    <label for="tool-selector-5">5</label>
    <input name="tool-selector" id="tool-selector-6" value="6" type="radio">
    <label for="tool-selector-6">6</label>
    <input name="tool-selector" id="tool-selector-7" value="7" type="radio">
    <label for="tool-selector-7">7</label>
  </fieldset>
</form>

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我希望它总是跨过页面宽度，而不是在屏幕太宽时无法到达行尾，或者在屏幕太窄时溢出到下一行。这有可能吗？如果有，怎么做

谢谢。

工作示例：

HTML:

---

这是jQuery Mobile，不是纯HTML解决方案

<form>
  <fieldset data-role="controlgroup" data-type="horizontal" data-mini="true">
    <input name="tool-selector" id="tool-selector-1" value="1" type="radio" checked>
    <label for="tool-selector-1">1</label>
    <input name="tool-selector" id="tool-selector-2" value="2" type="radio">
    <label for="tool-selector-2">2</label>
    <input name="tool-selector" id="tool-selector-3" value="3" type="radio">
    <label for="tool-selector-3">3</label>
    <input name="tool-selector" id="tool-selector-4" value="4" type="radio">
    <label for="tool-selector-4">4</label>
    <input  name="tool-selector" id="tool-selector-5" value="5" type="radio">
    <label for="tool-selector-5">5</label>
    <input name="tool-selector" id="tool-selector-6" value="6" type="radio">
    <label for="tool-selector-6">6</label>
    <input name="tool-selector" id="tool-selector-7" value="7" type="radio">
    <label for="tool-selector-7">7</label>
  </fieldset>
</form>

.ui-controlgroup-controls  {
    width: 100% !important;
}

// This number shoud reflect 100 divided with number of controlgroup radio elements
.ui-controlgroup-controls .ui-radio {
    width: 14.25% !important;    
}

.ui-controlgroup-controls .ui-radio label {
    text-align: center !important;    
}