body {
    background: 
    url(../images/flower_bg.jpg); /* 배경 이미지 */
    background-position: center;
    background-size: 95%;
    background-repeat: no-repeat;
    background-color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100vh;
    margin: 0;
}

.container {
    text-align: center;
    padding: 40px;
    width: 100%;
    max-width: 600px;
}
.container .flower_image {
    position: relative;
    left: 0;
}
.container .flower_image .flower1 {
    width: 130px;
    animation: swing 4s ease-in-out infinite;
    position: absolute;
    left: 900px;
    top: 100px;
}

.container .flower_image .flower2 {
    width: 130px;
    animation: swing 3s ease-in-out infinite;
    position: absolute;
    left: -530px; 
    top: -300px;

}

.container .flower_image .flower3 {
    width: 60px;
    animation: swing 5s ease-in-out infinite;
    position: absolute;
    left: 850px;
    top: -250px;
}
.container .flower_image .flower4 {
    width: 60px;
    animation: swing 4s ease-in-out infinite;
    position: absolute;
    left: -350px;
    top: 200px;
}

@keyframes swing {
    0% {
        transform: translateX(0) rotate(15deg); 
    }
    25% {
        transform: translateX(-20px) rotate(-15deg); 
    }
    50% {
        transform: translateX(20px) rotate(15deg);
    }
    75% {
        transform: translateX(-20px) rotate(-15deg);
    }
    100% {
        transform: translateX(0) rotate(15deg);
    }
}

.container h1 {
    font-size: 24px;
    color: #333;
    margin-bottom: 20px;
}

.containe .birthday-picker {
    margin-bottom: 20px;
}

input {
    padding: 10px;
    margin: 5px;
    font-size: 0.91rem;
    width: 130px;
    border: 1px solid #ccc;
    border-radius: 5px;
    text-align: center;
}

button {
    width: 420px;
    margin-top: 15px;
    padding: 12px 20px;
    font-size: 1.2rem;
    background-color: #8ba7d9;
    color: white;
    border: none;
    border-radius: 5px;

}

button:hover {
    background-color: #758fbd;
}

.result {
    margin-top: 20px;
    font-size: 1.125rem;
    color: #333;
    font-weight: bold;
}