/*
body {
  background-color: #42a5f5;
}
*/
.key_row {
  margin: 0 auto;
  width: 280px;
  clear: both;
  text-align: center;
  font-family: 'Exo';
}

.key_digit,
.key_dig {
  float: left;
  padding: 4px 43px;
  width: 30px;
  font-size: 2rem;
  cursor: pointer;
}

.key_sub {
  font-size: 0.8rem;
  color: grey;
}

.key_container {
  background-color: white;
  width: 320px;
  padding: 10px;
  margin: 10px auto;
  height: 420px;
  text-align: center;
  box-shadow: 0 14px 28px rgba(0, 0, 0, 0.25), 0 10px 10px rgba(0, 0, 0, 0.22);
}

#key_output {
  font-family: "Exo";
  font-size: 2rem;
  height: 60px;
  font-weight: bold;
  color: #1976d2;
}

#key_call {
  display: inline-block;
  background-color: #66bb6a;
  padding: 4px 30px;
  margin: 10px;
  color: white;
  border-radius: 4px;
  float: left;
  cursor: pointer;
}

.key_botrow {
  margin: 0 auto;
  width: 280px;
  clear: both;
  text-align: center;
  font-family: 'Exo';
}

.key_digit:active,
.key_dig:active {
  background-color: #e6e6e6;
}

#key_call:hover {
  background-color: #81c784;
}

.key_dig {
  float: left;
  padding: 10px 20px;
  margin: 10px;
  width: 30px;
  cursor: pointer;
}