* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.main .container {
    display: flex;
    min-width: 100vw;
    min-height: 100vh;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 15px;
    padding: 15px;
}

h1 {
    color: #333;
}

.btn {
    outline: none;
    box-shadow: none;
    padding: 5px 15px;
    background-color: darkcyan;
    color: white;
    text-align: center;
    display: inline-block;
    text-decoration: none;
    color: white;
    border-radius: 5px;
    font-weight: 600;
}

small {
    background-color: darkslateblue;
    color: white;
    font-weight: bold;
    padding: 2px 7px;
    border-radius: 4px;
    margin-bottom: 10px;
}