.biaoti {
    text-align: center;
    font-size: 30px;
    /* 添加彩虹动画 */
    background: linear-gradient(to right, red, orange, yellow, green, blue, indigo, violet);
    background-size: 200% auto;
    color: #000;
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: rainbow 3s linear infinite;
}

@keyframes rainbow {
    to {
        background-position: 200% center;
    }
}

body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.contact-container {
    background-color: #fff;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    width: 80%;
    max-width: 800px;
}

.contact-container h1 {
    text-align: center;
    color: #333;
    margin-bottom: 30px;
}

.contact-info {
    display: flex;
    justify-content: space-around;
    margin-bottom: 40px;
}

.info-item {
    text-align: center;
}

.info-item i {
    font-size: 30px;
    color: #40D3DC;
    margin-bottom: 10px;
}

.contact-form h2 {
    color: #333;
    margin-bottom: 20px;
}

.contact-form form {
    display: flex;
    flex-direction: column;
}

.contact-form input, .contact-form textarea {
    margin-bottom: 20px;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
}

.contact-form button {
    padding: 10px;
    background-color: #40D3DC;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.contact-form button:hover {
    background-color: #35b6bf;
}

.back-to-home {
    display: inline-block;
    padding: 10px 20px;
    background-color: #40D3DC;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    transition: background-color 0.3s;
    margin-left: 20px; /* 添加左边距 */
}

.back-to-home:hover {
    background-color: #35b6bf;
}


#codeRain {
    position: fixed;
    top: 0;
    left: 0;
    z-index: -1;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
}