button {
  border-width: 3px;
  border-bottom-color: #B3B3B3;
  border-right-color: #B3B3B3;
  border-left-color: #E3E3E3;
  border-top-color: #E3E3E3;
}

.group {
  display: flex;
  flex-direction: column;
  margin-bottom: 1em;
}

input {
  border-width: 3px;
  border-bottom-color: #E3E3E3;
  border-right-color: #E3E3E3;
  border-left-color: #B3B3B3;
  border-top-color: #B3B3B3;
}

input[type="number"] {
  -webkit-appearance: textfield;
     -moz-appearance: textfield;
          appearance: textfield;
  width: 3em;
}

.input {
  height: 1.5em;
  margin-bottom: 0.4em;
}

p {
    margin: auto;
    margin-right: 0.5em;
}

#svg-container {
    margin: auto;
}