@import url('https://fonts.googleapis.com/css2?family=Balsamiq+Sans&display=swap');

body {
  background-color: black;
  color: white;
  font-family: 'Balsamiq Sans', cursive;
}
button,
input {
  -webkit-appearance: none;
  border: 1px solid rgba(255, 255, 255, 0.5);
  background: none;
  color: inherit;
  font: inherit;
}
button:not(:disabled) {
  cursor: pointer;
}
button:focus,
input:focus {
  border-color: white;
  outline: none;
}

input[type=checkbox] {
  width: 15px;
  height: 15px;
  position: relative;
  vertical-align: bottom;
}
input[type=checkbox]:not(:disabled) {
  cursor: pointer;
}
input[type=checkbox]:checked {
  background-color: rgba(255, 255, 255, 0.3);
}
input[type=checkbox]:checked::after {
  content: '';
  position: absolute;
  width: 5px;
  height: 5px;
  top: 0;
  left: 0;
  margin: 4px;
  background-color: white;
}

:disabled {
  opacity: 0.5;
}