75 lines
1.8 KiB
CSS
75 lines
1.8 KiB
CSS
*{
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/* 初始化 取消页面元素的内外边距 */
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margin: 0;
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padding: 0;
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}
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body{
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/* 100%窗口高度 */
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height: 100vh;
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/* 弹性布局 水平、垂直居中 */
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display: flex;
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justify-content: center;
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align-items: center;
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/* 径向渐变背景 */
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background: radial-gradient(circle at center,#6b98bb,#000);
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}
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.radar{
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width: calc(256px + 48px);
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height: calc(256px + 48px);
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border: 1px solid;
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background:
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/* 重复的径向渐变 圈圈 */
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repeating-radial-gradient(
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transparent 0,
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transparent 30px,
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darkcyan 30px,
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darkcyan 32px
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),
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/* 线性渐变 中间横线 */
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linear-gradient(
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transparent 49.75%,
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darkcyan 49.75%,
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darkcyan 50.25%,
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transparent 50.25%
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),
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/* 线性渐变 中间竖线 */
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linear-gradient(
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90deg,
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transparent 49.75%,
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darkcyan 49.75%,
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darkcyan 50.25%,
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transparent 50.25%
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),
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/* 线性渐变 背景 */
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linear-gradient(#000,#000)
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;
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border-radius: 50%;
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/* 相对定位 */
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position: relative;
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}
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.radar::before{
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content: "";
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/* 绝对定位 */
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position: absolute;
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width: calc(256px / 2);
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height: calc(256px / 2);
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background: linear-gradient(
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45deg,
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rgba(0,0,0,0) 50%,
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rgba(0,255,255,1) 100%)
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;
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border-radius: 100% 0 0 0;
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top: calc(48px / 2);
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left: calc(48px / 2);
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/* 执行动画：动画名称 时长 线性的 无限次播放 */
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animation: scanning 5s linear infinite;
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/* 设置旋转元素的基点位置 */
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transform-origin: 100% 100%;
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}
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/* 定义动画 */
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@keyframes scanning {
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to{
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transform: rotate(360deg);
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}
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} |