body {
    background-color: #5e5b5b;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 90vh;
    background-color: #141125;
}


#calculator {
    width: 300px;
    margin: 0 auto;
    border: 1px solid #ccc;
    padding: 20px;
    border-radius: 5px;
    background-color: #fff;
  }
  
  #result {
    width: 100%;
    height: 50px;
    font-size: 25px;
    text-align: right;
    border: none;
    border-bottom: 1px solid #ccc;
    margin-bottom: 10px;
    color: #0a0a0a;
    background-color: rgb(150, 150, 204);
    border-radius: 3px;
    box-sizing: border-box;

  }
  
  button {
    width: 50px;
    height: 50px;
    font-size: 25px;
    margin-left: 1.5px;
    margin-right: 8px;
    margin-bottom: 5px;
    border-radius: 5px;
    border: none;
    outline: none;
    background-color: rgb(31, 31, 56);
    color: #d4d1d1;
    cursor: pointer;
  }
  
  button:hover {
    background-color: rgb(71, 71, 121);
    color: #f5f4f4;
  }

  .equal {
    background-color: rgb(103, 103, 231);
    color:#fff;
  }

  .equal:hover {
    background-color: rgb(49, 49, 238);
  }

  .del{
    color: red;
  }

  @media only screen and (max-width: 768px) {
    #calculator {
        width: 100%;
        max-width: 350px;
    }

    button {
        width: 20%;
        margin-right: 2%;
        margin-left: 2%;
        margin-bottom: 10px;
    }

    #result {
        font-size: 18px;
    }
}