body, * {
  padding: 0;
  margin: 0;
  font-family: sans-serif;
}

body {
  background-color: black;
}

.wrapper {
  position: absolute;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
  left: 50%;
  top: 50%;
  -webkit-transform: translate(-50%, -50%);
          transform: translate(-50%, -50%);
  width: 95%;
}

.wrapper .header {
  margin: 1em 0;
}

.wrapper .header .title {
  text-align: center;
  text-transform: uppercase;
  color: #aaaaaa;
  font-weight: 600;
}

.wrapper .container {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
  -webkit-box-align: space-between;
      -ms-flex-align: space-between;
          align-items: space-between;
  position: relative;
  background-color: #054219;
  margin: .5em 0;
  border-radius: 5px;
}

.wrapper .container .screen {
  margin: .5em auto;
  width: 100%;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
}

.wrapper .container .screen .input-screen {
  background-color: #bebebe;
  border: 1px solid black;
  border-radius: 5px;
  outline: none;
  height: 3em;
  width: 98%;
  font-size: 1.5em;
}

.wrapper .container .keys {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
}

.wrapper .container .keys .numbers {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
}

.wrapper .container .keys .operators {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
  margin-left: .5em;
}

.wrapper .container .keys .operators .column {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
}

.wrapper .container .keys .btn {
  width: 3em;
  outline: none;
  background-color: #aaaaaa;
  border: 1px solid black;
  border-radius: 5px;
  margin: .1em;
  padding: .4em;
  text-align: center;
  font-size: .8em;
}

.wrapper .container .keys .btn:hover {
  background-color: #bebebe;
}

@media (min-width: 400px) {
  .wrapper .keys .btn {
    width: 3.6em !important;
    margin: .3em !important;
    padding: .5em !important;
    font-size: 1em !important;
  }
}

@media (min-width: 500px) {
  .wrapper {
    top: 50%;
  }
  .wrapper .keys .btn {
    width: 5em !important;
  }
}

@media (min-width: 600px) {
  .wrapper {
    width: 600px;
  }
  .wrapper .keys .btn {
    width: 6em !important;
  }
}
/*# sourceMappingURL=style.css.map */