html - 如何用CSS3制作弧形？

Question

我正在尝试使用纯 CSS 实现以下外观:

其中每个白色弧线都是不同的元素，例如跨度。我知道我们可以用 css 制作圆形，但如何将其变成弧形？

Answer 1

使用以下 HTML:

<div id="arcs">
    <div>
        <div>
            <div>
                <div></div>
            </div>
        </div>
    </div>
</div>

还有 CSS:

#arcs div {
    border: 2px solid #000; /* the 'strokes' of the arc */
    display: inline-block;
    min-width: 4em; /* the width of the innermost element */
    min-height: 4em; /* the height of the innermost element */
    padding: 0.5em; /* the spacing between each arc */
    border-radius: 50%; /* for making the elements 'round' */
    border-top-color: transparent; /* hiding the top border */
    border-bottom-color: transparent;
}

#arcs div {
  border: 2px solid #000;
  /* the 'strokes' of the arc */
  display: inline-block;
  min-width: 4em;
  /* the width of the innermost element */
  min-height: 4em;
  /* the height of the innermost element */
  padding: 0.5em;
  /* the spacing between each arc */
  border-radius: 50%;
  /* for making the elements 'round' */
  border-top-color: transparent;
  /* hiding the top border */
  border-bottom-color: transparent;
}

<div id="arcs">
  <div>
    <div>
      <div>
        <div></div>
      </div>
    </div>
  </div>
</div>

JS Fiddle demo .