@import url('https://fonts.googleapis.com/css?family=Roboto+Mono:400,700');

body {
  font-family: 'Roboto Mono', monospace;
  font-weight: 700;
  background-color: #c4c5ff;
}

div {
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -moz-user-select: none;   
  -ms-user-select: none;    
  -o-user-select: none;
  user-select: none;
}

#calc {
  border-radius: 15px;
  margin: 40px auto;
  padding: 10px;
  height: 440px;
  width: 280px;
  background-color: #666;
}

#display, #log {
  background-color: #c3c2ab;
  border-radius: 5px;
  height: 50px;
  line-height: 40px;
  margin:  15px 15px 0px 15px;
  padding: 0 5px;
  text-align: right;
  font-size: 1.5em;
  overflow-x: auto;
  overflow-y: hidden;
}

#log {
  height: 35px;
  line-height: 20px;
  margin: 10px 15px;
  font-size: 0.8em;
  color: #444;
}

.row {
  text-align: center;
}

.button {
  height: 40px;
  line-height: 40px;
  width: 40px;
  display: inline-block;
  vertical-align: top;
  margin: 10px;
  border: 1px solid #aaa;
  border-radius: 50px;
  cursor: pointer;
  background-color: #999;
}

#AC, #C {
  background-color: #bc2f2f;
  color: white;
}

.dummy {
  visibility: hidden;
}

.op-button {
  background-color: #898bff;
}

.op-active {
  background-color: #3236ff;
  color: white;
}

#footer {
  margin-top: 50px;
  text-align: center;
  font-size: 0.8em;
  color: #444;
}

a {
  color: #444;
}