纯CSS模拟时钟

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css

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html

css

* {
  box-sizing: border-box;
}

.wrapper {
  width: 100%;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #f3fbff;
}

.clock {
  width: 300px;
  height: 300px;
  border-radius: 50%;
  position: relative;
}
.clock-circles {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  position: relative;
  font-size: 300px;
}
.clock-circles__item {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 1em;
  height: 1em;
  font-size: 100%;
}
.clock-circles__item:nth-child(1) {
  background-image: linear-gradient(to bottom, #00c0ff, #ffcf00, #fc4f4f, #0e22c3);
  box-shadow: 0px 30px 40px 0px rgba(72, 30, 202, 0.2);
}
.clock-circles__item:nth-child(2) {
  background-image: linear-gradient(to bottom, #027fff, #491bc9);
  font-size: 95%;
  box-shadow: 0px 10px 20px 0px rgba(42, 17, 121, 0.5);
}
.clock-circles__item:nth-child(3) {
  font-size: 80%;
  box-shadow: inset 0px 20px 40px rgba(0, 0, 0, 0.1), inset 0px 0px 40px rgba(37, 13, 105, 0.55), 0px 5px 0px #5430ff, 0px -1px 0px 3px rgba(14, 29, 169, 0.35);
}
.clock-circles__item:nth-child(4) {
  background: #3349c9;
  font-size: 35px;
  box-shadow: inset 0px 0px 10px 0px rgba(0, 0, 0, 0.2), inset 0px 0px 20px 1px rgba(54, 21, 148, 0.3);
}
.clock-circles__item:nth-child(4) .wave {
  position: absolute;
  width: 1em;
  height: 1em;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  border: 1px solid #fff;
  font-size: 100%;
}
.clock-circles__item:nth-child(4) .wave:nth-child(1) {
  opacity: 0;
}
.clock-circles__item:nth-child(4) .wave:nth-child(2) {
  font-size: 210%;
  opacity: 0.1;
}
.clock-circles__item:nth-child(4) .wave:nth-child(3) {
  font-size: 320%;
  opacity: 0.1;
}
.clock-circles__item:nth-child(4) .wave:nth-child(4) {
  font-size: 430%;
  opacity: 0.1;
}
.clock-circles__item:nth-child(4) .wave:nth-child(5) {
  font-size: 600%;
  opacity: 0.3;
  border-color: #321e9a;
}

.clock-indicators {
  position: absolute;
  width: 80%;
  height: 80%;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%) rotate(-45deg);
  border-radius: 50%;
}
.clock-indicators__item {
  position: absolute;
  left: calc(50% - 2px);
  width: 2px;
  -webkit-transform-origin: bottom center;
  transform-origin: bottom center;
  z-index: 2;
  border-radius: 1px;
  background: none;
  height: 108px;
  top: 10px;
  opacity: 0.5;
}
.clock-indicators__item:after {
  content: "";
  position: absolute;
  width: 2px;
  height: 7px;
  background: #fff;
  left: 0;
  top: 0;
  border-radius: 10px;
}
.clock-indicators__item:nth-child(1), .clock-indicators__item:nth-child(3), .clock-indicators__item:nth-child(5), .clock-indicators__item:nth-child(7) {
  opacity: 1;
  width: 8px;
}
.clock-indicators__item:nth-child(1):after, .clock-indicators__item:nth-child(3):after, .clock-indicators__item:nth-child(5):after, .clock-indicators__item:nth-child(7):after {
  height: 10px;
  width: 6px;
}
.clock-indicators__item:nth-of-type(1) {
  transform: rotateZ(calc(45deg * 1));
}
.clock-indicators__item:nth-of-type(2) {
  transform: rotateZ(calc(45deg * 2));
}
.clock-indicators__item:nth-of-type(3) {
  transform: rotateZ(calc(45deg * 3));
}
.clock-indicators__item:nth-of-type(4) {
  transform: rotateZ(calc(45deg * 4));
}
.clock-indicators__item:nth-of-type(5) {
  transform: rotateZ(calc(45deg * 5));
}
.clock-indicators__item:nth-of-type(6) {
  transform: rotateZ(calc(45deg * 6));
}
.clock-indicators__item:nth-of-type(7) {
  transform: rotateZ(calc(45deg * 7));
}
.clock-indicators__item:nth-of-type(8) {
  transform: rotateZ(calc(45deg * 8));
}
.clock-indicators__item:nth-of-type(9) {
  transform: rotateZ(calc(45deg * 9));
}
.clock-indicators__item:nth-of-type(10) {
  transform: rotateZ(calc(45deg * 10));
}
.clock-indicators__item:nth-of-type(11) {
  transform: rotateZ(calc(45deg * 11));
}
.clock-indicators__item:nth-of-type(12) {
  transform: rotateZ(calc(45deg * 12));
}
.clock-indicators__item:nth-of-type(13) {
  transform: rotateZ(calc(45deg * 13));
}
.clock-indicators__item:nth-of-type(14) {
  transform: rotateZ(calc(45deg * 14));
}
.clock-indicators__item:nth-of-type(15) {
  transform: rotateZ(calc(45deg * 15));
}
.clock-indicators__item:nth-of-type(16) {
  transform: rotateZ(calc(45deg * 16));
}
.clock-indicators__item:nth-of-type(17) {
  transform: rotateZ(calc(45deg * 17));
}
.clock-indicators__item:nth-of-type(18) {
  transform: rotateZ(calc(45deg * 18));
}
.clock-indicators__item:nth-of-type(19) {
  transform: rotateZ(calc(45deg * 19));
}
.clock-indicators__item:nth-of-type(20) {
  transform: rotateZ(calc(45deg * 20));
}
.clock-indicators__item:nth-of-type(21) {
  transform: rotateZ(calc(45deg * 21));
}
.clock-indicators__item:nth-of-type(22) {
  transform: rotateZ(calc(45deg * 22));
}
.clock-indicators__item:nth-of-type(23) {
  transform: rotateZ(calc(45deg * 23));
}
.clock-indicators__item:nth-of-type(24) {
  transform: rotateZ(calc(45deg * 24));
}
.clock-indicators__item:nth-of-type(25) {
  transform: rotateZ(calc(45deg * 25));
}
.clock-indicators__item:nth-of-type(26) {
  transform: rotateZ(calc(45deg * 26));
}
.clock-indicators__item:nth-of-type(27) {
  transform: rotateZ(calc(45deg * 27));
}
.clock-indicators__item:nth-of-type(28) {
  transform: rotateZ(calc(45deg * 28));
}
.clock-indicators__item:nth-of-type(29) {
  transform: rotateZ(calc(45deg * 29));
}
.clock-indicators__item:nth-of-type(30) {
  transform: rotateZ(calc(45deg * 30));
}
.clock-indicators__item:nth-of-type(31) {
  transform: rotateZ(calc(45deg * 31));
}
.clock-indicators__item:nth-of-type(32) {
  transform: rotateZ(calc(45deg * 32));
}
.clock-indicators__item:nth-of-type(33) {
  transform: rotateZ(calc(45deg * 33));
}
.clock-indicators__item:nth-of-type(34) {
  transform: rotateZ(calc(45deg * 34));
}
.clock-indicators__item:nth-of-type(35) {
  transform: rotateZ(calc(45deg * 35));
}
.clock-indicators__item:nth-of-type(36) {
  transform: rotateZ(calc(45deg * 36));
}
.clock-indicators__item:nth-of-type(37) {
  transform: rotateZ(calc(45deg * 37));
}
.clock-indicators__item:nth-of-type(38) {
  transform: rotateZ(calc(45deg * 38));
}
.clock-indicators__item:nth-of-type(39) {
  transform: rotateZ(calc(45deg * 39));
}
.clock-indicators__item:nth-of-type(40) {
  transform: rotateZ(calc(45deg * 40));
}
.clock-indicators__item:nth-of-type(41) {
  transform: rotateZ(calc(45deg * 41));
}
.clock-indicators__item:nth-of-type(42) {
  transform: rotateZ(calc(45deg * 42));
}
.clock-indicators__item:nth-of-type(43) {
  transform: rotateZ(calc(45deg * 43));
}
.clock-indicators__item:nth-of-type(44) {
  transform: rotateZ(calc(45deg * 44));
}
.clock-indicators__item:nth-of-type(45) {
  transform: rotateZ(calc(45deg * 45));
}
.clock-indicators__item:nth-of-type(46) {
  transform: rotateZ(calc(45deg * 46));
}
.clock-indicators__item:nth-of-type(47) {
  transform: rotateZ(calc(45deg * 47));
}
.clock-indicators__item:nth-of-type(48) {
  transform: rotateZ(calc(45deg * 48));
}
.clock-indicators__item:nth-of-type(49) {
  transform: rotateZ(calc(45deg * 49));
}
.clock-indicators__item:nth-of-type(50) {
  transform: rotateZ(calc(45deg * 50));
}
.clock-indicators__item:nth-of-type(51) {
  transform: rotateZ(calc(45deg * 51));
}
.clock-indicators__item:nth-of-type(52) {
  transform: rotateZ(calc(45deg * 52));
}
.clock-indicators__item:nth-of-type(53) {
  transform: rotateZ(calc(45deg * 53));
}
.clock-indicators__item:nth-of-type(54) {
  transform: rotateZ(calc(45deg * 54));
}
.clock-indicators__item:nth-of-type(55) {
  transform: rotateZ(calc(45deg * 55));
}
.clock-indicators__item:nth-of-type(56) {
  transform: rotateZ(calc(45deg * 56));
}
.clock-indicators__item:nth-of-type(57) {
  transform: rotateZ(calc(45deg * 57));
}
.clock-indicators__item:nth-of-type(58) {
  transform: rotateZ(calc(45deg * 58));
}
.clock-indicators__item:nth-of-type(59) {
  transform: rotateZ(calc(45deg * 59));
}
.clock-indicators__item:nth-of-type(60) {
  transform: rotateZ(calc(45deg * 60));
}

.clock-times {
  position: absolute;
  width: 70%;
  height: 70%;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
}
.clock-times__second, .clock-times__minute, .clock-times__hour {
  position: absolute;
  left: calc(50% - 1px);
  width: 2px;
  background: #f4eed7;
  transform-origin: bottom center;
  top: 5px;
  z-index: 2;
  border-radius: 1px;
}
.clock-times__second {
  height: 90px;
  margin-top: 10px;
  animation: time 2s linear infinite;
  z-index: 3;
  background-image: linear-gradient(to top, #e45753 0%, #ca09e8 100%);
  width: 3px;
  border-radius: 50px;
}
.clock-times__minute {
  height: 80px;
  margin-top: 20px;
  opacity: 0.75;
  animation: time 20s linear infinite;
  animation-delay: -35s;
}
.clock-times__hour {
  height: 70px;
  margin-top: 30px;
  width: 5px;
  border-radius: 50px;
  box-shadow: 3px 1px 6px -1px rgba(10, 21, 53, 0.45);
  animation: time 60s linear infinite;
  animation-delay: -20s;
}

@keyframes time {
  to {
    transform: rotateZ(360deg);
  }
}

JavaScript

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