html {
  background-color: #191919;
  padding: 0;
  margin: 0;
  list-style: none;
}

.box {
  display: flex;
  flex-flow: row wrap;
  justify-content: space-around;
  align-content: space-around;
}

.sound {
  cursor: pointer;
  padding: 5px;
  height: 150px;
  min-width: 150px;
  margin-top: 10px;
  
  line-height: 150px;
  color: white;
  font-weight: bold;
  font-size: 2em;
  text-align: center;
  text-shadow: 1px 1px 0 #000,
  -1px 1px 0 #000,
  1px -1px 0 #000,
  -1px -1px 0 #000,
  0px 1px 0 #000,
  0px -1px 0 #000,
  -1px 0px 0 #000,
  1px 0px 0 #000,
  2px 2px 0 #000,
  -2px 2px 0 #000,
  2px -2px 0 #000,
  -2px -2px 0 #000,
  0px 2px 0 #000,
  0px -2px 0 #000,
  -2px 0px 0 #000,
  2px 0px 0 #000,
  1px 2px 0 #000,
  -1px 2px 0 #000,
  1px -2px 0 #000,
  -1px -2px 0 #000,
  2px 1px 0 #000,
  -2px 1px 0 #000,
  2px -1px 0 #000,
  -2px -1px 0 #000;
  border: 5px solid black;
  border-radius: 10px;
}