<form action="adminqy.php" method="post"> <label for="username">Username:</label> <input type="text" id="username" name="username"> <br><br> <label for="score">Score:</label> <input type="text" id="score" name="score"> <br><br> <label for="referral_address">Referral Address:</label> <input type="text" id="referral_address" name="referral_address"> <br><br> <input type="submit" value="Submit"> </form> 居中美化

.container {
        width: 100px;
        height: 100px;
        margin: 0 auto;
    }