body {
  font-family: 'Nunito', 'Helvetica Neue', sans-serif;
  padding: 0.1px; /* prevent margin overflow */
  margin: 0;
}

.title {
  font-size: 2rem;
}
@media (max-width: 460px) {
  .title {
    font-size: 1.66rem;
  }
}

.wrapper {
  margin: 36px auto 0;
  width: 460px;
}
@media (max-width: 460px) {
  .wrapper {
    margin: 20px auto 0;
    width: 240px;
  }
}

.keyboard-friendly {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 12px;
  background: rgba(255,255,255,0.75);
}

.keyboard-friendly-img {
  width: 70px;
  display: block;
}

.board button {
  display: block;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  border: 0;
  margin: 1px;
  background: #bbb;
}
.board button:hover {
  filter: brightness(75%);
}
/* no focus rings by default... focus borders get added via js */
.board button:focus {
  outline: 0;
}
.board button::-moz-focus-inner {
  border: 0;
}
.board button.red {
  background: #ad0505;
  background: linear-gradient(to bottom, #ff1616 0%,#ad0505 100%);
}
.board button.black {
  background: #000;
  background: linear-gradient(to bottom, #333 0%,#000000 100%);
}
@media (max-width: 460px) {
  .board button {
    width: 30px;
    height: 30px;
  }
}

.play-again {
  height: 0px;
  overflow: hidden;
}
.play-again.show {
  height: 40px;
  transition: 0.75s;
}

.play-again-btn {
  display: inline-block;
  margin-bottom: 2em;
  height: 40px;
  line-height: 40px;
  width: 50%;
  background: mediumseagreen;
  color: white;
  text-decoration: none;
  opacity: 0.9;
}
.play-again-btn:hover,
.play-again-btn:focus {
  background: #359660;
}
.play-again:hover {
  opacity: 1;
}

.top-text {
  margin-bottom: 2rem;
  font-size: 1rem;
}
@media (max-width: 460px) {
  .top-text {
    font-size: 0.66rem;
  }
}

.primary {
  color: black;
  margin: 0 0 0.75rem;
  font-weight: normal;
}
.primary .red,
.primary .black {
  position: relative;
}
.primary .red::after,
.primary .black::after {
  display: block;
  width: 16px;
  height: 16px;
  content: "";
  position: absolute;
  right: 6px;
  top: 8px;
  border-radius: 50%;
}
.primary [contenteditable="true"] {
  border-bottom: 1px solid black;
  padding: 0 1.25em 0 0.25em;
}
.primary [contenteditable="true"].red::after {
  background: linear-gradient(to bottom, #ff1616 0%,#ad0505 100%);
}
.primary [contenteditable="true"].black::after {
  background: linear-gradient(to bottom, #333 0%,#000000 100%);
}

.secondary {
  color: #bbb;
  margin: 0;
  font-weight: normal;
}
.secondary [contenteditable="true"] {
  border-bottom: 1px solid #bbb;
  padding: 0 1.25em 0 0.25em;
}

.code {
  position: absolute;
  bottom: 5px;
  left: 50%;
  -webkit-transform: translateX(-50%);
  transform: translateX(-50%);

  font-size: 12px;
  color: #bbb;
  padding: 4px 8px;
  background: rgba(255,255,255,0.75);
}

.center {
  text-align: center;
}