style.css

body   {
  padding: 0;
  margin: 0;
  background: #8C969E;
  font-family: 'Roboto', sans-serif;
  -webkit-user-select: none;  /* Chrome all / Safari all */
  -moz-user-select: none;     /* Firefox all */
  -ms-user-select: none;      /* IE 10+ */
  user-select: none;          /* Likely future */
  text-align: center;
}

p {
  margin-bottom: 5px;
  font-size:18px;
}

#sidebar {
  position: fixed;
  left: 0;
  top: 0;
  height: 100%;
  width: 180px;
  background-color: #F7FCFF;
  background: -webkit-linear-gradient(top, #f7fcff, #e7f0f7);
}

#game-holder {
  top: 20%;
  left: 37%;
}

#game-buttons {
  width: 100%;
  height: 40px;
}

#face-button {
  width: 30px;
  height: 30px;
  background-image: url('images/happy_face.png');
  background-size: 25px 26px;
  margin-top: 5px;
}

#solve-button {
  margin-top: 50px;
}

.no-outline {
  outline: none;
}

.input-style {
  border: 1px solid #ccc;
  background-color: #fff;
  width: 80px;
  height: 27px;
}

.column-left{
  float: left;
  width: 33.33%;
  height: 100%;
}

.column-center{
  display: inline-block;
  width: 33.33%;
  height: 100%;
}

.column-right{
  float: right;
  width: 33.33%;
  height: 100%;
}

.italics {
  font-style: italic;
}

.dark-blue {
  color: rgb(0, 0, 100);
}

.box-shadow {
  box-shadow: 1px 0 3px 0 #404A52, 1px 0 0 #646D74;
}

.absolute {
  position: absolute;
}

.minesweeper-gray {
  background-color: rgb(192, 192, 192);
}