* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    width: 100%;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(45deg, #0a0a0a, #3a4452);
}

.container {
    border: 1px solid #3a4452;
    padding: 20px;
    border-radius: 10px;
    background: transparent;
}

input {
    width: 280px;
    border: none;
    padding: 20px;
    text-align: right;
    background: transparent;
    font-size: 45px;
    cursor: pointer;
    color: white;

}

input::placeholder {
    color: white;
}

button {
    border: none;
    width: 60px;
    height: 60px;
    margin: 10px;
    border-radius: 50%;
    color: white;
    background: transparent;
    font-size: 20px;
    box-shadow: -8px -8px 15px rgba(255, 255, 255, 0.1);
    cursor: pointer;

}

.equalBtn {
    background-color: #fb7c14;
}

.operator {
    color: chartreuse;
}