/* Box Model */
*,
*:before,
*:after {
  box-sizing: border-box;
}
/* Basic */
html,
body {
  border: none;
  height: 100%;
}
html,
body,
p,
h1 {
  margin: 0;
  padding: 0;
  font-family: "Poppins", sans-serif;
}
body {
  background: url("background.jpg");
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
  background-attachment: fixed;
  padding-top: 30px;
  font: 400 16px/16px "Arial", sans-serif;
  letter-spacing: 0.06em;
  text-align: center;
}
/* User Style */
.title {
  display: inline-block;
  padding: 10px;
  margin-bottom: 30px;
  background-color: #091d35;
  font-size: 30px;
  line-height: 1em;
  font-weight: 300;
  color: #fff;
}
.wrapper {
  width: 300px;
  margin: 0 auto;
  padding: 30px 20px;
  background-color: #091d35;
  border: 1px solid rgb(34, 50, 185);
  box-shadow: 0px 0px 27.3px 2.7px rgba(0, 0, 0, 0.5);
}
.wrapper:after {
  content: "";
  display: table;
  clear: both;
}

.buttons {
  margin: -1px;
}
.calc-display,
.btn {
  background-color: #dfdfdf;
}
/* Calculator display */
.calc-display {
  height: 80px;
  margin-bottom: 25px;
  padding: 15px;
  border: 1px solid #999;
  text-align: left;
}
.calc-display-first,
.calc-display-second {
  line-height: 1em;
}
.calc-display-first {
  font-size: 16px;
  margin-bottom: 10px;
}
.calc-display-second {
  font-size: 24px;
}
/* Buttons */
.btn {
  margin: 1px;
  float: left;
  outline: none;
  border: 1px solid #ddd;
  cursor: pointer;
  font-size: 25px;
  font-family: "Poppins", sans-serif;
}
.btn:hover {
  background-color: #d2d2d2;
}
.btn-small,
.btn-big-v {
  width: 63px;
}
.btn-small,
.btn-big-h {
  height: 63px;
}
.btn-big-v {
  height: 128px;
  float: right;
}
.btn-big-h {
  width: 128px;
}

[value="ac"] {
  background-color: #ff751f;
  border: 1px solid #eb5a00;
  color: #fff;
}
[value="ac"]:hover {
  background-color: #eb5a00;
}
/* Footer */
footer {
  padding: 30px 0;
}
.copyrights,
.copyrights a {
  color: #091d35;
  font-size: 12px;
}