body, html {
    height: 100%;
    margin: 0;
    font-family: Arial, sans-serif;
    overflow-x: hidden;
    background-color: #f1ede4;
}

.bg {
    background-image: url('background.jpg');
    height: 100%;
    background-position: top center;
    background-repeat: no-repeat;
    background-size: contain;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: flex-end;
    padding-bottom: 50px;
}

.container {
    width: 100%;
    max-width: 600px;
    padding: 10px;
    box-sizing: border-box;
}

.options {
    display: flex;
    justify-content: space-around;
    flex-wrap: nowrap;
    flex-direction: row-reverse;
    margin-bottom: 40px;
}

.option {
    margin: 20px;
    flex: 1 1 auto;
    text-align: center;
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    background-color: rgba(255, 255, 255, 0.8);
    color: #000;
    text-decoration: none;
    border-radius: 5px;
    transition: background-color 0.3s;
    max-width: 100%;
    box-sizing: border-box;
}

.btn:hover {
    background-color: rgba(255, 255, 255, 1);
}

@media (max-width: 768px) {
    .bg {
        background-size: cover;
        padding-bottom: 100px;
    }


    .options {
        flex-direction: column;
        align-items: center;
        margin-bottom: 20px;
    }

    .option {
        flex: none;
        width: 100%;
        max-width: 300px;
        margin: 5px;
    }
}

@media (max-width: 400px) {
    .bg {
        background-image: url('background-narrow.jpg');
        background-size: contain;
        background-position: center;
        padding-bottom: 120px;
    }

    .options {
        margin-bottom: 10px;
    }
}