body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
}

.container {
    max-width: 400px;
    margin: 0 auto;
    padding: 20px;
    background-color: #ffffff;
    border-radius: 10px;
    box-shadow: 0px 2px 5px rgba(0, 0, 0, 0.1);
}

.input-group {
    margin-bottom: 15px;
}

.input-group label {
    display: block;
    margin-bottom: 5px;
}

.input-group input,
.input-group select {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
    box-sizing: border-box;
    font-size: 16px;
    margin-top: 5px; /* 保持与标签的一致间距 */
}

.input-group select + label {
    margin-top: 10px;
}

.input-group select option {
    font-size: 16px;
}

/* 改进后的按钮样式 */
.btn {
    display: inline-block;
    background-color: #007bff;
    color: #ffffff;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    margin-top: 10px;
}

/* 自定义样式的文件输入 */
.input-group #image {
    /*display: none;*/ /* 隐藏默认的文件输入 */
}

.input-group .custom-upload {
    display: inline-block;
    background-color: #007bff;
    color: #ffffff;
    padding: 8px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    margin-top: 5px;
}

.input-group .custom-upload:hover {
    background-color: #0056b3; /* 鼠标悬停时稍微加深颜色 */
}