body {
    background-color: #000000;
}

.container {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    width: 100vw;
}

.calculator {
    background-color: #ffffff;
    width: 350px;
    height: 400px;
    border-radius: 10px;
    box-shadow: 0 0 10px 0 white;
}

.display {
    background-color: #363b30;
    height: 100px;
    width: 330px;
    border-radius: 10px 10px 0 0;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    align-items: flex-end;
    padding: 0 10px;
}

.ans {
    color: #adadad;
    text-decoration: underline;

}

.input {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    height: 50px;
    width: 100%;
    color: white;
    font-size: 30px;
}

.result {
    background-color: transparent;
    border: none;
    text-align: right;
    color: #ffffff;
    font-size: 2rem;
    font-family: 'Roboto', sans-serif;
    font-weight: 300;
    width: 280px;
    opacity: 0.5;
}

.result:focus {
    outline: none;
}

.result.displayed {
    opacity: 1;
}

.buttons {
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    height: 300px;
    width: 350px;
    margin-top: 10px;
}

.numbers {
    display: flex;
    flex-wrap: wrap;
    height: 300px;
    width: 200px;
}

.operators {
    display: flex;
    flex-wrap: wrap;
    height: 300px;
    width: 120px;
}

.btn {
    background-color: #363b30;
    border: none;
    color: #ffffff;
    font-size: 1.5rem;
    font-family: 'Roboto', sans-serif;
    font-weight: 300;
    height: 50px;
    width: 50px;
    border-radius: 50%;
    margin: 5px;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
}