3.Push-Button.html

<div class="rect"></div>
<div class="rect2"></div>
<div class="inner-circle"></div>
<div class="dot"></div>
<style>
  body {
background:#6592CF;
display:flex;
justify-content:center;
align-items:center;

}

  .inner-circle {
    position:absolute;
    width: 150px;
    height: 150px;
    border-radius:50%;
    border: 50px solid #6592CF;
  }
  .dot {
    position:absolute;
    width: 50px;
    height: 50px;
    background: #EEB850;
    border-radius:50%;
    border: 50px solid #243D83;
}
  .rect {
    position:absolute;
    left:50;
    width: 300px;
    height: 150px;
    background: #243D83;