.container1 {
    max-width: 400px;
    margin: 50px auto;
    padding: 20px;
    border: 2px solid #92cae6;
    border-radius: 5px;
    box-shadow: 5px 2px 5px rgba(240, 163, 163, 0.1);
}

.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    font-weight: bold;
}

input[type="number"] {
    width: 100%;
    padding: 10px;
    border-radius: 5px;
    border: 1px solid #ccc;
}

.btn1 {
    padding: 10px 20px;
    background-color: #007bff;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

.results {
    margin-top: 20px;
    font-weight: bold;
}