<div class="wrapper">
  <ul>
    <li class="circle"><span></span></li>
  </ul>
</div>
<div class="gradient-line"></div>
        HTML
格式化
支持Emmet,输入 p 后按 Tab键试试吧!
 <head> ... </head>
<body>
</body>
            
            
:root {
  --white: #ffffff;
  --light: #f0eff3;
  --black: #000000;
  --dark-blue: #1f2029;
  --dark-light: #353746;
  --red: #da2c4d;
  --yellow: #f8ab37;
  --grey: #ecedf3;
  --bg: #ffede9;
  --bg-color: rgba(62, 45, 92, 0.7);
  --bg-light-color: rgba(255, 34, 87, 0.7);
  --rosa: #fc00ff;
  --aqua: #89b482;
  --cream: hsl(38 47% 75%);
  --black: hsl(20 3% 19%);
  --greyLight-1: #e4ebf5;
  --greyLight-2: #00dbde;
  --greyLight-3: #bec8e4;
  --background:
    radial-gradient(
      6.67% 50% at 50% -50%,
      rgba(38, 217, 127, 0.1) 0%,
      rgba(38, 217, 127, 0) 0%
    ),
    radial-gradient(
      99.67% 100% at 50% -75%,
      rgba(71, 235, 235, 0.15) 0%,
      rgba(71, 235, 235, 0) 70%
    );
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  font-family: "Poppins", sans-serif;
  line-height: 1.15;
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
}
body {
  padding: 0;
  width: 100%;
  height: 100vh;
  overflow: hidden;
  background: rgba(25, 33, 56, 1.0);
  background-image: var(--background);
  display: flex;
  position: relative;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
  font-family: "Poppins", sans-serif;
}
body:before {
    content: "";
    height: 100vh;
    width: 100%;
    background: repeating-linear-gradient(45deg, var(--bg-color), var(--bg-color) 1em, var(--bg-light-color) 1em, var(--bg-light-color) 2em );
    display: flex;
    opacity: 0.1;
}
body:after {
    content: "";
    height: 100vh;
    width: 100%;
    background: repeating-linear-gradient(45deg, var(--bg-color), var(--bg-color) 1em, var(--bg-light-color) 1em, var(--bg-light-color) 2em );
    display: flex;
    opacity: 0.1;
}
.title_video {
  position: absolute;
  left: 50%;
  width: 100%;
  display: flex;
  transform: translateX(-50%);
  bottom: 0;
  opacity: 0.4;
  transition: 0.3s ease;
  max-width: 100%;
  backface-visibility: hidden;
}
@keyframes hueRotate {
  0% {
    filter: hue-rotate(0) blur(30px);
  }
  100% {
    filter: hue-rotate(360deg) blur(30px);
  }
}
.gradient-line:before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  width: 100%;
  display: flex;
  opacity: 0.4;
  bottom: -115px;
  height: 115px;
  filter: blur(20px);
  -webkit-filter: blur(20px);
  background-image: conic-gradient(from 180deg at 50% 100%, transparent 0, transparent 27%, #ff3998 27%, #d764ff 36.04%, #00b5ff 58.23%, #0fd 63%, #54fa43 73%, transparent 73%, transparent 100%);
  animation: hueRotate 2.9s linear infinite;
}
.banner {
  background-color: #252731;
  padding: 21px;
  opacity: 1;
  width: 40%;
  top: 20%;
  border-radius: 20px;
  position: absolute;
  z-index: 2147483645;
  display: block;
  font-family: "Poppins", sans-serif;
  font-size: 0.85rem;
  font-weight: 400;
  line-height: 1.4;
  color: #e1e3eb;
  box-shadow: 0px 1px 3px rgba(9, 10, 15, 0.25), 0px 4px 16px rgba(9, 10, 15, 0.1), 0px 8px 24px rgba(9, 10, 15, 0.1), inset 0px 1px 1px #323543;
}
.banner .content {
  width: 100%;
  margin: 0 -50px 5px 50px;
}
.banner button {
  -webkit-appearance: none;
     -moz-appearance: none;
          appearance: none;
  border: none;
  color: inherit;
  outline: none;
  font: inherit;
  font-size: 14px;
  font-weight: 500;
  font-family: "Poppins", sans-serif;
  background: #2e303d;
  box-shadow: inset 0 0 0 1px #3c3e4d;
  line-height: 24px;
  padding: 8px 16px;
  border-radius: 15px;
  cursor: pointer;
  margin: 0;
  transition: background-color 0.2s;
}
.banner button:hover {
  background-color: #323543;
}
.banner button.muted {
  background: none;
  box-shadow: inset 0 0 0 1px #353744;
}
.banner button.muted:hover {
  background-color: #292b36;
}
.grid [class^=grid-] {
  float: left;
}
.grid .grid-1-2 {
  width: 50%;
}
.group:after {
  content: "";
  display: flex;
  clear: both;
}
.title__video {
  position: absolute;
  height: 50px;
  width: 100%;
  z-index: 1147483641;
  bottom: 0;
  right: 0;
  backface-visibility: hidden;
}
.wrapper {
  width: 30%;
  height:355px;
  position: absolute;
  top: 20%;
  display: flex;
  z-index: 9999;
  margin: 0 auto;
  background: circle(#2e3235, #181b1e);
  border-radius: 15px;
  border: 1px solid rgba(0,0,0,0.3);
  box-shadow:
    0 0 10px rgba(0,0,0,0.4),
    0 10px 10px 3px rgba(0,0,0,0.1),
    inset 0 1px 0 rgba(71, 235, 235,0.25);
  transition: all 0.5s ease;
}
ul {
  height: 100%;
  width: 100%;
}
li {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  position: absolute;
  border: 2px solid #16191c;
  background: #222529;
  box-shadow: 
    inset 0 1px 0 rgba(255,255,255,0.1),
    inset 0 -2px 1px rgba(0,0,0,0.1),
    0 1px 1px rgba(255,255,255,0.1);
  cursor: pointer;
}
li:hover {
     box-shadow:  
    inset 0 1px 0 rgba(255,255,255,0.1),
    inset 0 -2px 1px rgba(0,0,0,0.1),
    0 1px 1px rgba(255,255,255,0.1),
    inset 0 20px 50px rgba(100,100,100,0.1);
}
li:active {
    transform: scale(0.9);
    transition: all 0.5s ease;
   box-shadow: 0px 0px 40px rgba(235, 85, 53, 1),
        0px 0px 1px rgba(255, 59, 242, 0.75), 0px 0px 1px rgba(235, 85, 53, 0.5),
        0px 0px 1px rgba(255, 59, 242, 0.35), 0px 0px 1px rgba(255, 59, 242, 0.2);
}
li span {
     display: block;
}
.circle {
     top: 5%;
  margin-top: -1px;
  right: 8px;
}
.circle span {
  border: 4px solid #eb5535;
  transform: scale(0.6);
  border-radius: inherit;
  height: 100%;
  width: 100%;
}
.title___video {
  position: absolute;
  height: 40px;
  width: 100%;
  bottom: 0;
  right: 0;
}