body, html {
  background-color: black;
  padding: 0px;
  margin: 0px;
  background-color: #a0a0a0;
}

#case {
  width: 296px;
  padding: 8px 3px 3px 3px;
  border-radius: 7px;
  margin: 0 auto;
  background-color: #101316;
  box-shadow: 6px 7px 15px 1px #101316;
}

#top-section {
  width: 100%;
  border-style: solid;
  border-color: #101316;
  border-width: 2px;
  border-radius: 7px;
  background: url(https://res.cloudinary.com/dnrhtjoay/image/upload/calculator/brushed-texture.gif) left top repeat;
}

.logo-left {
  height: 50px;
  width: 46%;
  float: left;
  text-align: center;
  font-family: 'Dhurjati', sans-serif;
  font-size: 25px;
  padding-top: 10px;
}

.logo-right {
  height: 50px;
  width: 54%;
  float: right;
  text-align: left;
  font-family: 'Gruppo';
  font-size: 50px;
  margin-top: -10px;
}

#panel-bottom {
  width: 100%;
  display:flex;
  justify-content: center;
  padding-top: 10px;
  padding-bottom: 20px;
}

#display-border {
  background-color: #262930;
  width: 93%;
  height: 78px;
  border-radius: 3px;
  box-shadow: 6px 6px 6px -4px black inset;
}

#led-display {
  background: #1e1616;
  height: 35px;
  margin: 20px;
}

.led-digit {
  font-family: 'Rationale', sans-serif;
  font-size: 24px;
  text-align: center;
  float: right;
  width: 25px;
  margin-top: 1px;
}

.led-on {
  color: #ff4f3f;
  background-color: #7a261d;
  text-shadow: 1px 0px 6px red;
  box-shadow: 0px 0px 15px 10px #2b1d1c inset;
}

.led-off {
  color: #3a2624;
  background-color: #2b1d1c;
}

#btn-enclosure {
  width: 100%;
  border-style: solid;
  border-color: #101316;
  border-width: 2px;
  border-radius: 3px;
  background-color: #262930;
  background: url(https://res.cloudinary.com/dnrhtjoay/image/upload/calculator/plastic-texture2.gif) left top repeat;
  padding: 0px 10px 20px 10px;
}

button {
  font-family: 'Chathura', sans-serif;
  font-weight: bold;
  font-size: 30px;
  height: 32px;
  width: 45px;
  border-radius: 6px;
  box-shadow: 1px 1px 6px 2px black;
  border-width: 1px;
  border-color: #9d9fa5;
}

button:active {
  transform: translateY(1px);
  box-shadow: 1px 1px 3px 1px black;
  border-color: #252c33;
}

button:focus {
  outline: none;
}

.op-btn {
  color: white;
  background-color: #62bbdd;
  border-color: #62bbdd;
}

.num-btn {
  color: black;
  background-color: #f7f9ee;
  border-color: silver;
}

.column {
  width: 48px;
  float: left;
  margin-left: 15px;
  padding-top: 20px;
}

p {
  margin: -7px;
}