body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 20px;
    background-color: #f4f4f4;
}

header {
    background-color: #333;
    color: white;
    padding: 20px;
    text-align: left; /* 标题左对齐 */
}

header h1 {
    font-size: 3em; /* 放大标题字体大小 */
    margin-bottom: 10px;
}

footer{

}

main {
    padding: 20px;
    text-align: center;
}

h2 {
    color: #333;
}

.tool-link {
    display: inline-block;
    background-color: #007BFF;
    color: white;
    padding: 10px 20px;
    text-decoration: none;
    border-radius: 5px;
    margin-top: 20px;
}

.tool-link:hover {
    background-color: #0056b3;
}