@import url('https://fonts.googleapis.com/css?family=Heebo:300&display=swap'); * { box-sizing: border-box; } :root { --primary-color: #000; --secondary-color: #fff; } html { transition: all 0.5s ease-in; } html.dark { --primary-color: #fff; --secondary-color: #333; } html.dark { background-color: #111; color: var(--primary-color); } body { font-family: 'Heebo', sans-serif; display: flex; align-items: center; justify-content: center; height: 100vh; overflow: hidden; margin: 0; } .toggle { cursor: pointer; background-color: var(--primary-color); color: var(--secondary-color); border: 0; border-radius: 4px; padding: 8px 12px; position: absolute; top: 100px; } .toggle:focus { outline: none; } .clock-container { display: flex; flex-direction: column; justify-content: space-between; align-items: center; } .clock { position: relative; width: 200px; height: 200px; } .needle { background-color: var(--primary-color); position: absolute; top: 50%; left: 50%; height: 65px; width: 3px; transform-origin: bottom center; transition: all 0.5s ease-in; } .needle.hour { transform: translate(-50%, -100%) rotate(0deg); } .needle.minute { transform: translate(-50%, -100%) rotate(0deg); height: 100px; } .needle.second { transform: translate(-50%, -100%) rotate(0deg); height: 100px; background-color: #e74c3c; } .center-point { background-color: #e74c3c; width: 10px; height: 10px; position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); border-radius: 50%; } .center-point::after { content: ''; background-color: var(--primary-color); width: 5px; height: 5px; position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); border-radius: 50%; } .time { font-size: 60px; } .date { color: #aaa; font-size: 14px; letter-spacing: 0.3px; text-transform: uppercase; } .date .circle { background-color: var(--primary-color); color: var(--secondary-color); border-radius: 50%; height: 18px; width: 18px; display: inline-flex; align-items: center; justify-content: center; line-height: 18px; transition: all 0.5s ease-in; font-size: 12px; }