body {
    font-family: Arial, sans-serif;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

#addForm {
    margin-bottom: 20px;
}

#urlInput {
    width: 70%;
    padding: 8px;
    margin-right: 10px;
}

button {
    padding: 8px 15px;
    background-color: #007BFF;
    color: white;
    border: none;
    cursor: pointer;
}

button:hover {
    background-color: #0056b3;
}

.link-item {
    margin-bottom: 10px;
    padding: 10px;
    background-color: #f8f9fa;
    border-radius: 5px;
}

.link-item a {
    color: #007BFF;
    text-decoration: none;
}

.link-item a:hover {
    text-decoration: underline;
}

.rounded-box {
    display: inline-block;
    /* 设置固定宽度 */
    width: 300px; 
    padding: 10px; 
    border: 2px solid #007BFF; 
    border-radius: 10px; 
    text-decoration: none; 
    color: #007BFF; 
    text-align: center; /* 文字居中 */
    transition: background-color 0.3s, color 0.3s; 
}

.rounded-box:hover {
    background-color: #007BFF; 
    color: white; 
}