/* Import Google font - Poppins */
@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap");
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Poppins", sans-serif;
}
body {
  height: 1vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #e0e3eb;
}
.container {
  position: relative;
  max-width: 300px;
  width: 100%;
  border-radius: 12px;
  padding: 10px 20px 20px;
  background: #fff;
  box-shadow: 0 5px 10px rgba(0, 0, 0, 0.05);
}
.display {
  height: 80px;
  width: 100%;
  outline: none;
  border: none;
  text-align: right;
  margin-bottom: 10px;
  font-size: 25px;
  color: #000e1a;
  pointer-events: none;
}
.buttons {
  display: grid;
  grid-gap: 10px;
  grid-template-columns: repeat(4, 1fr);
}
.buttons button {
  padding: 10px;
  border-radius: 6px;
  border: none;
  font-size: 20px;
  cursor: pointer;
  background-color: #eee;
}
.buttons button:active {
  transform: scale(0.99);
}
.operator {
  color: #2f9fff;
}
#cubed {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 20em;
  height: 7em;
  margin-left: -9em;
  margin-top: -10.5em;
  background-repeat: no-repeat;
  transform: skewY(-12deg) scale(0.9);
  transform-origin: 0 0;
}
html, body{
  width: 100%;
  height:100%;
}

body {
    background: linear-gradient(-45deg, #ee7752, #e73c7e, #23a6d5, #23d5ab);
    background-size: 400% 400%;
    animation: gradient 15s ease infinite;
}

@keyframes gradient {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}


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