CSS:加载微调器方形圆形外观

Question

我正在尝试仅使用 CSS 实现微调器，如下图所示，请参见图片。一次只有一件旋转器充满颜色。

在下面的 fiddle 中，有一个类似的微调器，但我需要旋转整个微调器 (22.5°) 并修改它的光线。

http://jsfiddle.net/ucsnaukf/

HTML:

<div class="spinner"><div>Loading…</div></div>

CSS:

@-webkit-keyframes spin {
    to { transform: rotate(1turn); }
}
@-moz-keyframes spin {
    to { transform: rotate(1turn); }
}
@-ms-keyframes spin {
    to { transform: rotate(1turn); }
}
@keyframes spin {
    to { transform: rotate(1turn); }
}

.spinner {
    position: relative;
    display: inline-block;
    width: 5em;
    height: 5em;
    margin: 0 .5em;
    font-size: 12px;
    text-indent: 999em;
    overflow: hidden;
-webkit-animation: spin 0.8s infinite steps(8);
   -moz-animation: spin 0.8s infinite steps(8);
    -ms-animation: spin 0.8s infinite steps(8);
     -o-animation: spin 0.8s infinite steps(8);
        animation: spin 0.8s infinite steps(8);
        }

.spinner:before,
.spinner:after,
.spinner > div:before,
.spinner > div:after {
    content: '';
    position: absolute;
    top: 0;
    left: 2.25em; /* (container width - part width)/2  */
    width: .5em;
    height: 1.5em;
    border-radius: .2em;
    background: #eee;
    box-shadow: 0 3.5em #eee; /* container height - part height */
    transform-origin: 50% 2.5em; /* container height / 2 */
}

.spinner:before {
    background: blue;
}

.spinner:after {
    transform: rotate(-45deg);
}

.spinner > div:before {
    transform: rotate(-90deg);
}

.spinner > div:after {
    transform: rotate(-135deg);
}

有人能帮忙吗？

Answer 1

这是您的开始 ( http://jsfiddle.net/ucsnaukf/73/ ):

<--! HTML -->
<div class="wrapper">
    <div class="spinner">
        <div>Loading…
        </div>
    </div>
    <div class="circ"></div>
</div>

/* CSS */
@-webkit-keyframes spin {
    to { transform: rotate(1turn); }
}
@-moz-keyframes spin {
    to { transform: rotate(1turn); }
}
@-ms-keyframes spin {
    to { transform: rotate(1turn); }
}
@keyframes spin {
    to { transform: rotate(1turn); }
}
.wrapper{
    border:1px solid white;
    border-radius:100%;

    position:relative;
    width: 5em;
    height: 5em; 
    border-radius:999px;
    overflow:hidden; 
}
/* Circular mask */
.circ{
    border:1px solid WHITE;
    position:absolute;
    top:10%;
    left:10%;
    right:0;
    bottom:0;
    width:55%;
    height:55%;
    background-color:#fff;
    border-radius:999px;
}
.spinner {
    border:1px solid white; 
    border-radius:100%;/* Round the border */
    position: absolute;
    display: inline-block;
    width: 5em;
    height: 5em;    
    font-size: 12px;
    text-indent: 999em;
    overflow: hidden;
    -webkit-animation: spin 0.8s infinite steps(8);
    -moz-animation: spin 0.8s infinite steps(8);
    -ms-animation: spin 0.8s infinite steps(8);
    -o-animation: spin 0.8s infinite steps(8);
    animation: spin 0.8s infinite steps(8);
}

.spinner:before,
.spinner:after,
.spinner > div:before,
.spinner > div:after {
    content: '';
    position: absolute;
    top: 0;
    left: 1.8em; /* (container width - part width)/2 */
    width: 1.4em; /* longer */
    height: .8em; /* shorter */
    background: #eee;
    box-shadow: 0 4.2em #eee; /* container height - part height */
    transform-origin: 50% 2.5em; /* container height / 2 */
}

.spinner:before {
    background: purple;
}

.spinner:after {
    transform: rotate(-45deg);
}

.spinner > div:before {
    transform: rotate(-90deg);
}

.spinner > div:after {
    transform: rotate(-135deg);
}

看起来有点像花，但继续玩它，你会得到你想要的样子。

您可能想考虑使用 Web 上众多外观漂亮、可免费使用的微调器之一...查看这个庞大的集合，例如:http://codepen.io/collection/HtAne/