body {
    background-color: #302C2C;
    font-family: 'Courier New', Courier, monospace;
}

.headings-container p {
    text-align: center;
    color: #fff;
    font-size: 2.2rem;
}

.highlight-one {
    color:#3E62B3;
}

.highlight-two {
    color:#4E854E;
}

.highlight-three {
    color:#D6922D;
}

.calculator-container {
    color: #fff;
    border: 2px solid #9C9797;
    border-radius: 5px;
    margin: 50px auto;
    width: 30vw;
    height: 70vh;
    display: flex;
    flex-direction: column;
}

.display {
    border-bottom: 2px solid orangered;
    height: 15vh;
    font-size: 4rem;
    display: block;
    text-align: end;
    padding: 80px 10px 0px 0px;
    overflow: scroll;
}

.inner-container {
    display: flex;
    flex-wrap: wrap;
    flex-grow: 1;
}

.inner-container > div {
    font-size: 2.2rem;
    display: flex;
    justify-content: center;
    align-items: center;
    width: calc(100% / 5);
    min-height: 60px;
    flex-grow: 1;
    border: 0.5px solid #fff;
}

.inner-container > div:not(.blank-key) {
    cursor: pointer;
}

.inner-container > div:not(.blank-key):hover {
    font-weight: 700;
}

.operator-key {
    background-color: #4E854E;
}

.number-key {
    background-color: #3E62B3;
}

.equal-sign {
    background-color: #D6922D;
}

.btn-container {
    display: flex;
    border: none;
}

.clear-btn {
    background-color: #D6922D;
    color: #fff;
    border-radius: 0px;
    border: none;
    font-size: 2.2rem;
    font-weight: 700;
    font-family: 'Courier New', Courier, monospace;
    width: 100%;
    height: 100%;
    cursor: pointer;
}