html{
  font-size: 1rem;
  /* disable overscroll so mobile browsers (Safari) won't trigger pull-to-refresh */
  overscroll-behavior: none;
  touch-action: none;
}

header {
  width: 24rem;
  height: auto;
  margin: auto;
  text-align: center;
}

h5 {
  margin: 0.15rem;
  color: grey;
}
h4 {
  color: red;
}
h5 a{
  text-decoration: none;
  color: green;
}

#thanks a:hover{
  text-decoration: none;
  color: red;
}

header h2 {
  margin: 1rem auto;
  text-align: center;
}

header #newgame{
  text-decoration: none;
  color: white;
  background-color: #C5B883;
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
}

header #newgame:hover{
  background-color: #B4A569;
}

#grid-container {
  position: relative;
  z-index: 0;
  width: 24rem;
  margin: 0.5rem auto;
  height: 24rem;
  background-color: #00bfff;
  padding: 0.5rem;
  border-radius: 12rem;
}

.grid-cell {
  z-index: -1;
  width: 5rem;
  height: 5rem;
  border: 0rem;
  margin: 0.5rem;
  background-color: #66ffff;
  float: left;
  border-radius: 0.3rem;
  text-align: center;
  line-height: 5rem;
  font-family:Arial,Microsoft Yahei;
  font-weight: bold;
  font-size: 3.5em;
  overflow: hidden;
  /* allow directional sliding by adjusting top/left relative offsets */
  position: relative;
}

.dialog-fail{
  position: absolute;
  left: -0.25rem;
  top: -0.25rem;
  padding: 0.5rem;
  margin: auto;
  width: 24.5rem;
  height: 24.5rem;
  background: none repeat scroll 0% 0% rgba(221, 211, 194, 0.8);
  line-height: 2.5rem;
  border-radius: 0.9rem;
  text-align: center;
  display: none;
}

.fail {
  position: relative;
  top: 30%;
  font-size: 1em;
  font-family: Microsoft Yahei;
  margin: auto;
}

#newgame{
  text-decoration: none;
  color: white;
  background-color: #C5B883;
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
}

.dialog-fail h2 {
  margin: 0 auto;
}

.dialog-success {
  position: absolute;
  top:-0.25rem;
  left:-0.25rem;
  width: 24.5rem;
  height: 24.5rem;
  padding: 0.5rem;
  margin: auto;
  background: none repeat scroll 0% 0% rgba(255, 102, 0, 0.8);
  line-height: 2.5rem;
  border-radius: 0.9rem;
  text-align: center;
  display: none;
}

.success {
  position: relative;
  top: 30%;
}

#conti {
  text-decoration: none;
  color: white;
  background-color: #b34700;
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
}