style.css

* {
  -webkit-box-sizing: border-box;
          box-sizing: border-box;
  font-family: Gotham Rounded, sans-serif;
  font-size: 25px;
}

body {
  padding: 0;
  margin: 0;
}

main {
  display: -ms-grid;
  display: grid;
  grid-gap: 2px;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
  -ms-flex-line-pack: center;
      align-content: center;
  min-height: 100vh;
  -ms-grid-columns: (100px)[4];
      grid-template-columns: repeat(4, 100px);
  -ms-grid-rows: minmax(120px, auto) (80px)[5];
      grid-template-rows: minmax(120px, auto) repeat(5, 80px);
}

main .output {
  grid-column: 1 / -1;
  border-radius: 6px;
  background: #dddada;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: end;
      -ms-flex-align: end;
          align-items: flex-end;
  -ms-flex-pack: distribute;
      justify-content: space-around;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
  padding: 8px;
  word-wrap: break-word;
  word-break: break-all;
}

main .output .answer {
  position: relative;
  width: 100%;
  height: 100%;
}

main .output .answer::after {
  content: attr(data-after);
  padding: 5px;
  position: absolute;
  top: 2px;
  right: 2px;
  min-width: 40px;
  height: 30px;
}

main .output .answer input {
  width: 100%;
  height: 100%;
  padding: 10px 10px 5px 10px;
  outline: none;
  border: none;
}

main .output .answer:focus {
  outline: none;
}

main button {
  cursor: pointer;
  border: none;
  outline: none;
  background: #e0e0e4;
  border-radius: 6px;
}

main button:hover {
  background: #d9d9dd;
}

main .operators {
  background: #c2c0c0;
}

main .operators:hover {
  background: #b6b4b4;
}

main .ac, main .equal {
  grid-column: span 2;
}

main .equal {
  background: #5e99f1;
}

main .equal:hover {
  background: #4c8ef1;
}
/*# sourceMappingURL=style.css.map */