style.css

body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: #f4f4f4;
    font-family: 'Arial', sans-serif;
}

.container {
    display: flex;
    flex-direction: column;
    align-items: center; /* Center align the title and calculator */
}

.title {
    font-size: 24px; /* Adjust title size */
    margin-bottom: 20px; /* Space between title and calculator */
    color: #333; /* Color of the title */
}

.calculator {
    border-radius: 5px; 
    padding: 20px;
    background-color: #ffffff;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    width: 400px; /* Adjusted width for more elements */
    height: 600px; /* Increased height */
}

#result {
    width: 100%;
    height: 60px;
    text-align: right;
    margin-bottom: 20px;
    font-size: 32px;
    border: 2px solid #007bff;
    border-radius: 5px;
    padding: 10px;
    background-color: #f9f9f9;
}

.buttons {
    display: flex;
    flex-direction: row; /* Horizontal layout */
    justify-content: space-between; /* Space between numbers and operators */
    height: calc(100% - 80px); /* Remaining height */
}

.numbers {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px; /* Space between buttons */
    flex: 3; /* Numbers take more space */
}

.operators {
    display: flex;
    flex-direction: column; /* Vertical layout for operators */
    gap: 10px; /* Space between buttons */
    flex: 1; /* Operators take less space */
}

button {
    padding: 20px;
    font-size: 22px;
    border: none;
    border-radius: 5px; 
    background-color: #007bff;
    color: white;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.1s;
}

button:hover {
    background-color: #0056b3;
}

button:active {
    transform: scale(0.95);
}

button.operator {
    background-color: #28a745; 
}

button.operator:hover {
    background-color: #218838;
}