style.css

:root {
  --logo-color: #3f5575;
}

html, body {
  margin: 0;
  font-family: Georgia, 'Times New Roman', Times, serif;
}

.header {
  width: 100%;
  padding: 16px;
  background: #000;
}

.header > .logo {
  width: 16%;
  height: 16%;
}

.main {
  margin: 8px;  
}

.logo-shape-o {
  position: relative;
  width: 80px;
  height: 100px;
  background: var(--logo-color);
  border-radius: 50%;
}

.logo-shape-o-white {
  position: absolute;
  left: 10px;
  bottom: 10px;
  width: 60px;
  height: 84px;
  background: #fff;
  border-radius: 50%;
  z-index: 1;
}

.logo-shape-o-adjustment1 {
  position: absolute;
  left: 4px;
  top: 0;
  width: 62px;
  height: 48px;
  background: var(--logo-color);
  border-radius: 50% 50% 28px 4px;
  z-index: 2;
  transform: rotate(23deg);
}

.logo-shape-o-adjustment2 {
  position: absolute;
  left: 3px;
  top: 49px;
  width: 62px;
  height: 12px;
  background: #fff;
  border-radius: 50%;
  z-index: 3;
  transform: rotate(14deg);
}