*{
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
body{
    font-family: Arial, sans-serif;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(135deg, rgb(130, 130, 255), lightblue);
    color: #333;
}
h1{
    text-align: center;
    margin: 20px 0;
    color: #444;
}
#result{
    min-height: 40px;
    min-width: 200px;
    text-align: center;
    font-size: 24px;
    margin: 20px 0;
    border-radius: 8px;
    background-color: white;
    color: #2c3e50;
}
main{
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    max-width: 60%;
    margin: 50px auto;
    padding: 20px;
    border-radius: 8px;
    border: 1px solid #ccc;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}
.interval{
    font-size: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}
label{
    color: #555;
}
input[type="number"]{
    width: 100px;
    margin-left: 10px;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 16px;
}
#generate{
    padding: 10px 20px;
    font-size: 18px;
    color: white;
    background-color: #007bff;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}
#generate:hover{
    background-color: #0056b3;
}
@media (max-width: 768px) {
    main {
        max-width: 80%;
    }
    #result {
        font-size: 20px;
    }
    input[type="number"] {
        width: 80px;
    }
}