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半圆效果.html

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <title>半圆角</title>
    <style type="text/css">
        body {
            padding-left: 100px;
            padding-top: 100px;
            background-color: #40479a;
        }

        .outter-circle {
            position: relative;
            width: 200px;
            display: inline-block;
            height: 100px;
            box-sizing: border-box;
            border-radius: 200px 200px 0 0;
            border: 4px solid #859900;
            border-bottom-style: none;
        }

        .inner-circle {
            position: absolute;
            top: -3px;
            left: -3px;
            z-index: -1;
            box-sizing: border-box;
            width: 198px;
            height: 198px;
            border-radius: 50%;
            border: 2px solid #ddd;
        }


        .outter-circle-big {
            position: relative;
            width: 240px;
            height: 120px;
            box-sizing: border-box;
            border-radius: 240px 240px 0 0;
            border: 6px solid #2AA198;
            border-bottom-style: none;
        }


        .inner-circle-big {
            position: absolute;
            top: -4px;
            left: -4px;
            z-index: -1;
            box-sizing: border-box;
            width: 237px;
            height: 237px;
            border-radius: 50%;
            border: 3px solid #ddd;
        }


        .circle-box-wrapper {
            position: relative;
            width: 240px;
            height: 240px;
        }


        .circle-one {
            width: 240px;
            height: 240px;
            animation: circleMoveTwo 1400ms infinite;
        }

        .circle-two {
            position: absolute;
            left: 20px;
            top: 20px;
            width: 200px;
            height: 200px;
            animation: circleMoveOne 1300ms infinite;
        }


        @keyframes circleMoveOne {
            10% {
                transform: rotate(36deg);
                -webkit-transform: rotate(36deg);
                -moz-transform: rotate(36deg);
                -o-transform: rotate(36deg);
                -ms-transform: rotate(36deg);
            }

            20% {
                transform: rotate(72deg);
                -webkit-transform: rotate(72deg);
                -moz-transform: rotate(72deg);
                -o-transform: rotate(72deg);
                -ms-transform: rotate(72deg);
            }

            30% {
                transform: rotate(108deg);
                -webkit-transform: rotate(108deg);
                -moz-transform: rotate(108deg);
                -o-transform: rotate(108deg);
                -ms-transform: rotate(108deg);
            }

            40% {
                transform: rotate(144deg);
                -webkit-transform: rotate(144deg);
                -moz-transform: rotate(144deg);
                -o-transform: rotate(144deg);
                -ms-transform: rotate(144deg);
            }

            50% {
                transform: rotate(180deg);
                -webkit-transform: rotate(180deg);
                -moz-transform: rotate(180deg);
                -o-transform: rotate(180deg);
                -ms-transform: rotate(180deg);
            }

            60% {
                transform: rotate(216deg);
                -webkit-transform: rotate(216deg);
                -moz-transform: rotate(216deg);
                -o-transform: rotate(216deg);
                -ms-transform: rotate(216deg);
            }

            70% {
                transform: rotate(252deg);
                -webkit-transform: rotate(252deg);
                -moz-transform: rotate(252deg);
                -o-transform: rotate(252deg);
                -ms-transform: rotate(252deg);
            }

            80% {
                transform: rotate(288deg);
                -webkit-transform: rotate(288deg);
                -moz-transform: rotate(288deg);
                -o-transform: rotate(288deg);
                -ms-transform: rotate(288deg);
            }

            90% {
                transform: rotate(324deg);
                -webkit-transform: rotate(324deg);
                -moz-transform: rotate(324deg);
                -o-transform: rotate(324deg);
                -ms-transform: rotate(324deg);
            }

            100% {
                transform: rotate(360deg);
                -webkit-transform: rotate(360deg);
                -moz-transform: rotate(360deg);
                -o-transform: rotate(360deg);
                -ms-transform: rotate(360deg);
            }
        }


        @keyframes circleMoveTwo {
            from {
                transform: rotate(0deg);
                -webkit-transform: rotate(0deg);
                -moz-transform: rotate(0deg);
                -o-transform: rotate(0deg);
                -ms-transform: rotate(0deg);
            }

            to {
                transform: rotate(360deg);
                -webkit-transform: rotate(360deg);
                -moz-transform: rotate(360deg);
                -o-transform: rotate(360deg);
                -ms-transform: rotate(360deg);
            }
        }
    </style>
</head>

<body>
    <!-- 半圆旋转 -->
    <div class="circle-box-wrapper">
        <div class="circle-one">
            <div class="outter-circle-big">
                <div class="inner-circle-big"></div>
            </div>
        </div>

        <div class="circle-two">
            <div class="outter-circle">
                <div class="inner-circle"></div>
            </div>
        </div>
    </div>
</body>

</html>