calculator.css

*{
    margin: 5px;
}

body {
    display: flex;
    align-items: center;
    justify-content: center;

}

.container {
    justify-content: center;
    color: #fff;
    background-color: #000;
    width: 400px;
    height: min-content;
    border-radius: 12px;
    padding: 20px;
    font-size: 30px;
    font-weight: 500;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

.answer {
    height: 50px;
    margin-left: 24rem;
    font-size: 40px;
    margin-bottom: 40px;
}

.symbol {
    display: flex;
    justify-content: space-around;
    height: 50px;
    text-align: center;
}

.symbol button {
    color: #000;
    align-items: center;
    height: 45px;
    width: 45px;
    border-radius: 50%;
    background-color: rgb(192, 190, 185);
}

.symbol :last-child {
    background-color: rgb(237, 158, 12);
}

.seven {
    display: flex;
    justify-content: space-around;
    height: 50px;
    text-align: center;
}

.seven button {
    color: white;
    height: 45px;
    width: 45px;
    border-radius: 50%;
    background-color: rgb(68, 65, 60);
}

.seven :last-child {
    background-color: rgb(237, 158, 12);
}

.four {
    display: flex;
    justify-content: space-around;
    height: 50px;
    text-align: center;
}

.four button {
    color: white;
    align-items: center;
    height: 45px;
    width: 45px;
    border-radius: 50%;
    background-color: rgb(68, 65, 60);
}

.four :last-child {
    background-color: rgb(237, 158, 12);
}

.one {
    display: flex;
    justify-content: space-around;
    height: 50px;
    text-align: center;
}

.one button {
    color: white;
    align-items: center;
    height: 45px;
    width: 45px;
    border-radius: 50%;
    background-color: rgb(68, 65, 60);
}

.one :last-child {
    background-color: rgb(240, 159, 9);
}

.last {
    display: flex;
    justify-content: space-around;
    height: 50px;
    text-align: center;
}

.last button {
    color: white;
    align-items: center;
    height: 45px;
    width: 45px;
    border-radius: 50%;
    background-color: rgb(68, 65, 60);
}

.last :last-child {
    background-color: rgb(238, 158, 10);
}

.last :first-child {
    width: 150px;
    height: 45px;
    border-radius: 30px;
    text-align: left;
}

/* hover section*/

.symbol :hover {
    background-color: whitesmoke;
    color: black;
    cursor: pointer;
}

.division:hover {
    background-color: white;
    color: orange;
    cursor: pointer;
}

.seven :hover {
    background-color: whitesmoke;
    color: black;
    cursor: pointer;
}

.multiply:hover {
    background-color: white;
    color: orange;
    cursor: pointer;
}

.four :hover {
    background-color: whitesmoke;
    color: black;
    cursor: pointer;
}

.minus:hover {
    background-color: white;
    color: orange;
    cursor: pointer;
}

.one :hover {
    background-color: whitesmoke;
    color: black;
    cursor: pointer;
}

.plus:hover {
    background-color: white;
    color: orange;
    cursor: pointer;
}

.last :hover {
    background-color: whitesmoke;
    color: black;
    cursor: pointer;
}

.equal-to:hover {
    background-color: white;
    color: orange;
    cursor: pointer;
}