<button class="button">Button</button>
<button class="button">Button</button>
<button class="button">Button</button>
html,
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
}

body {
  background: #970c23;
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  align-items: center;
  line-height: 1;
  position: relative;
}

body::before {
  background: repeating-linear-gradient(
    transparent,
    transparent 2em,
    rgba(45,25,25,0.3) 2em,
    rgba(45,25,25,0.3) 2.5em,
    transparent 2.5em,
    transparent 4.5em,
    rgba(45,25,25,0.3) 4.5em,
    rgba(45,25,25,0.3) 6.5em,
    transparent 6.5em,
    transparent 7em,
    rgba(45,25,25,0.3) 7em,
    rgba(45,25,25,0.3) 9em
  );
  content: '';
  bottom: 0;
  top: 0;
  left: 0;
  right: 0;
  position: absolute;
}

body::after {
  background: repeating-linear-gradient( 90deg,
    transparent,
    transparent 2em,
    rgba(45,25,25,0.3) 2em,
    rgba(45,25,25,0.3) 2.5em,
    transparent 2.5em,
    transparent 4.5em,
    rgba(45,25,25,0.3) 4.5em,
    rgba(45,25,25,0.3) 6.5em,
    transparent 6.5em,
    transparent 7em,
    rgba(45,25,25,0.3) 7em,
    rgba(45,25,25,0.3) 9em
  );
  content: '';
  bottom: 0;
  top: 0;
  left: 0;
  right: 0;
  position: absolute;
}

.button {
  background: #4d6b61;
  border: 0;
  border-radius: 50%;
  box-shadow: inset -0.125rem -0.25rem rgba(0,0,0,0.2),
              inset 0.125rem 0.25rem rgba(255,255,255,0.2),
              0.125rem 0.25rem 0.25rem rgba(0,0,0,0.35);
  color: #4d6b61;
  display: inline-block;
  font-size: 0.625em;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  text-align: center;
  text-decoration: none;
  text-shadow: 1px 1px 1px rgba(0,0,0,0.3), -1px -1px 1px rgba(255,255,255,0.4);
  height: 8rem;
  width: 8rem;
  position: relative;
  z-index: 1;
}

.button::before {
  content: '';
  border-radius: 50%;
  box-shadow: inset -0.0625rem -0.125rem rgba(255,255,255,0.2),
              inset 0.0625rem 0.125rem rgba(0,0,0,0.2);
  position: absolute;
  top: 1rem;
  left: 1rem;
  height: 6rem;
  width: 6rem;
}

.button::after {
  content: '';
  border-radius: 50%;
  box-shadow: 2.45rem 2.45rem #462227,
              2.45rem 4.45rem #462227,
              4.45rem 2.45rem #462227,
              4.45rem 4.45rem #462227,
              2.55rem 2.55rem rgba(255,255,255,0.2),
              2.55rem 4.55rem rgba(255,255,255,0.2),
              4.55rem 2.55rem rgba(255,255,255,0.2),
              4.55rem 4.55rem rgba(255,255,255,0.2),
              2.35rem 2.35rem rgba(0,0,0,0.2),
              2.35rem 4.35rem rgba(0,0,0,0.2),
              4.35rem 2.35rem rgba(0,0,0,0.2),
              4.35rem 4.35rem rgba(0,0,0,0.2);
  position: absolute;
  top: 0;
  left: 0;
  height: 1rem;
  width: 1rem;
}

.button:focus {
  background: #56796d;
  outline:0;
}

.button:active {
  transform: scale(0.98,0.98);
}

/* Hide buttons on small screens */
@media only screen and (max-height: 440px) {
  button:nth-child(3) {
    display: none;
  }
}

@media only screen and (max-height: 300px) {
  button:nth-child(2) {
    display: none;
  }
}

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

This Pen doesn't use any external JavaScript resources.