.conatiner {
    widows: 100%;
    height: 100vh;
    background-color: #e3f9ff;
    display: flex;
    align-items: center;
    justify-content: center;
}

.calculator {
    background: #3a4452;
    padding: 20px;
    border-radius: 10px;
}

.display {
    display: flex;
    justify-content: flex-end;
    margin: 20px 0;   
}

#display-main{
      text-align: right;
      flex: 1;
      font-size: 45px;
      box-shadow: none;
}

form input{
    border: 0;
    outline: 0;
    width: 60px;
    height: 60px;
    border-radius: 10px;
    box-shadow: -8px -8px 15px rgba(255, 255, 255, 0.1),5px 5px 15px rgba(0, 0, 0, 0.2);
    background-color: transparent;
    font-size: 20px;
    color: white;
    cursor: pointer;
    margin: 10px;
}

.equal {
    width: 145px;
}

.operator {
    color: #bbf9ef;
}