.calculator {
    border-radius: 10px;
    box-shadow: 0px 3px 6px 0px rgba(0, 0, 0, 0.15), 0px 2px 4px 0px rgba(0, 0, 0, 0.12);
    margin-inline-start: auto;
    margin-inline-end: auto;
    margin-block-start: 2em;
    max-inline-size: 22rem;
    overflow: hidden;
    color: hsl(202, 11%, 29%);
  }
  .calculator__output {
    background: hsl(255, 100%, 100%);
    font-size: 4.2rem;
    padding-block-start: 3rem;
    padding-block-end: 0.5rem;
    padding-inline-end: 1.25rem;
    text-align: end;
  }
  .calculator__keys {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-gap: 1px;
    background: hsl(255, 100%, 100%);
    padding: 0.5rem;
  }
  .calculator__key {
    background: hsl(210, 25%, 95%);
    border: none;
    padding-block-start: 1rem;
    padding-block-end: 1rem;
    padding-inline-end: 1.25rem;
    padding-inline-start: 1.25rem;
    font-size: 1.5rem;
    inline-size: 70px;
    block-size: 70px;
    margin: 0.25rem;
    border-radius: 40px;
    font-weight: bold;
  }
  .calculator__key:active,
  .calculator__key:focus {
    box-shadow: 0 0 8px 0 rgba(0, 0, 0, 0.3) inset;
    outline: none;
  }
  .calculator__key--operator {
    font-size: x-large !important;
    font-weight: bolder !important;
    border: none;
    padding-block-start: 1rem;
    padding-block-end: 1rem;
    padding-inline-end: 1.25rem;
    padding-inline-start: 1.25rem;
    font-size: 1.5rem;
    inline-size: 70px;
    block-size: 70px;
    margin: 0.25rem;
    border-radius: 40px;
    background: hsl(208, 25%, 86%);
   
  }
  .calculator__key--operator:active {
    background: hsla(207, 24%, 80%, 0.685);
  }

  .calculator__output {
    background: hsl(207, 19%, 61%); 
  }
  .calculator__keys {
    background: hsl(207, 19%, 61%); 
  }
  .calculator__key {
    background: hsl(206, 14%, 41%); 
    color: hsl(255, 100%, 100%); 
  }
  .btt{
    background-color: #71efa3;
    border: none;
    padding-block-start: 1rem;
    padding-block-end: 1rem;
    padding-inline-end: 1.25rem;
    padding-inline-start: 1.25rem;
    inline-size: 70px;
    block-size: 70px;
    margin: 0.25rem;
    border-radius: 40px;
    color: black;
    font-weight: bold;
  }
  .calci{
    background: rgba(255, 204, 201, 1.0);
    border: none;
    grid-column: 3 / 5;
    grid-row: 1 / span 4;
    height: auto;
    font-size: xx-large;
    color:  black;
    border-radius: 9rem;
  }
  .bxt{
    /* margin-left: 10px; */
    box-shadow: 0px 15px 25px  black;
  }
  .light-mode{
    box-shadow: 1px 1px 15px white;
    background-color: white;
  }
  body {
    padding: 25px;
    background-color: white;
    color: black;
    font-size: 25px;
  }
  
  .dark-mode {
    background-color: black;
    color: white;
  }
  .mn{
    display: block;
    font-size: xx-large !important;
    color: black;
    text-shadow: 0px 0px 5px  black;

  }
  .su{
    display: block;
    font-size: xx-large !important;
    color: wheat;
    text-shadow:0px 1px 30px #F9C53E;
    margin-left: 2rem ;
  }
  .lgpos{
    border: 1px solid;
    width: 93px;
    border-radius: 4rem;
    box-shadow: 1px 1px 15px #F9C53E;
    box-shadow: 1px 1px 15px black;
  }
  .title{
    font-family: 'Whisper', cursive;
    font-weight: 600;
    font-size: xx-large;
    text-shadow:5px 2px 15px black ;
    text-shadow:1px 1px 15px white;
  }
  .foot{
    font-family: 'Whisper', cursive;
    font-weight: 600;
  }
  @media (max-width:400px) {
    #header{
      width: 21rem;
      margin: -12px;
    }
  }