.calculator-game {
    background-image: url("../assets/background-game.jpg");
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-size: cover;
    background-clip: content-box;
}

.calculator {
    width: 1400px;
    height: 600px;
    background-color: #E4DFD2;
    border-radius: 50px;
    border: 2px solid #c0bcb1;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.option-general {
    display: flex;
    flex-direction: row;
    justify-content: space-around;
    width: 100%;
    padding: 20px 0;
    border-radius: 15px 15px 0 0
}

.option-general button {
    width: 200px;
    height: 70px;
    font-size: 18px;
    padding: 15px;
    font-weight: 700;
    border-radius: 20px;
    outline: none;
    background-color: #0a0a0a;
    box-shadow: 5px 5px 10px #cacaca;
    color: #fff;
    cursor: pointer
}

.option-general button:hover {
    background-color: #242424;
    box-shadow: 5px 5px 10px #868585;
    transition: all 0.5s;
}

.main-panel {
    width: 100%;
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    padding-top: 20px;
}

.counter-time {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background-color: #ffaa00;
    text-align: center;
    line-height: 100px;
    font-size: 50px;
    text-shadow: 2px 2px #89898a;
    border: 3px solid #f3bd51;
    font-weight: 700;
    margin-right: 90px;
}

.math-problem {
    width: 35%;
    height: 60px;
    border-bottom: 1px solid #000;
    border-top: 1px solid #000;
    text-align: center;
    line-height: 50px;
    font-size: 50px;
    margin-left: 98px;
    margin-right: 100px;
    display: flex;
    justify-content: center;
    align-items: center;
    padding-bottom: 5px
}

.math-problem p {
    font-family: Georgia, 'Times New Roman', Times, serif;
}

.question-number {
    width: 150px;
    height: 60px;
    text-align: center;
    line-height: 60px;
    font-size: 40px;
    background-color: #a9e4ee;
    padding: 5px 30px;
    border-radius: 7px;
    border-top: 5px solid #f0b5ec;
    border-right: 5px solid #f0b5ec;
}

.keyboard {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    width: 50%;
    height: 300px;
}

.key {
    width: 32%;
    border: 2px solid #0a0a0a;
    margin: 1px;
    background-color: #f8e0d3;
    border-radius: 20px;
    outline: none;
    cursor: pointer;
    font-size: 40px;
    font-family: Cambria, Cochin, Georgia, Times, 'Times New Roman', serif
}

.key:hover {
    background-color: #ecc6b2;
    transition: all 0.3s;
    font-weight: 700;
}