* {
    margin: 0;
    padding: 0;
    outline: none;
  }
  
  body {
    background: linear-gradient(150deg, grey, rgb(83, 7, 58));
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
  }
  
  .container {
    max-width: 100%;
    font-family: "Orbitron", sans-serif;
    color: white;
    border: 1px solid black;
    border-radius: 5px;
    box-shadow: 0 0 25px  black;
    width: 350px;
    display: grid;
    padding: 30px;
    grid-gap: 10px;
    grid-template-rows: 1.5fr 1fr 1fr 1fr 1fr;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    grid-template-areas:
      "screen screen screen screen"
      "ac    ac   delete   divide"
      "btn7   btn8   btn9   multiply"
      "btn4   btn5   btn6       minus"
      "btn1   btn2   btn3      plus"
      "btn0   btn0    dot     equals";
  }
  
  #screen {
    grid-area: screen;
    border-radius: 2px;
    background-color: #474646;
    padding: 8px 12px;
    font-size: 27px;
    display: flex;
    justify-content: flex-end;
    align-items: flex-end;
    word-break: break-all;
    overflow: hidden;
    max-height: 74px;
    text-align:right;
  }
  
  #ac {
    grid-area: ac;
  }
  #del {
    grid-area: delete;
    padding: 0;
  }
  #dot {
    grid-area: dot;
  }
  #plus {
    grid-area: plus;
  }
  #minus {
    grid-area: minus;
  }
  #multiply {
    grid-area: multiply;
  }
  #divide {
    grid-area: divide;
  }
  #equals {
    grid-area: equals;
  }
  #btn0 {
    grid-area: btn0;
  }
  #btn1 {
    grid-area: btn1;
  }
  #btn2 {
    grid-area: btn2;
  }
  #btn3 {
    grid-area: btn3;
  }
  #btn5 {
    grid-area: btn5;
  }
  #btn6 {
    grid-area: btn6;
  }
  #btn7 {
    grid-area: btn7;
  }
  #btn8 {
    grid-area: btn8;
  }
  #btn9 {
    grid-area: btn9;
  }
  
  .btn {
    padding: 16px;
    margin: 0;
    font-size: 20px;
    cursor: pointer;
    background-color: #5f5f5f;
    border-style: solid;
    border-color: rgb(37, 37, 37);
    border-width: 0.01em;
    color: white;
    font-family: "Orbitron", sans-serif;
    box-shadow: 2px 2px 5px 0px;
  }
  
  :is(#equals, .operators) {
    background-color: rgb(122, 8, 65);
    font-size: 1.5rem;
    padding: 0;
    line-height: 1.5rem;
  }
  
  :is(#equals, .btn, .operators):hover {
    background-color: cornflowerblue;
  }