body {
    padding: 10px;
}

h1 {
    color: #333;
}

.app-name {
    text-align: center;
    font-size: 20px;
    font-weight: normal;
    margin-top: 60px;
    margin-bottom: 95px;
}

.advertisement {
    text-align: center;
    font-size: 12px;
    font-weight: normal;
    margin-bottom: -50px;
    color: #007bff;
}

.introduce {
    text-align: center;
    font-size: 15px;
    font-weight: normal;
    padding-bottom: 15px;
    color: #007bff;
}

.login-container {
    margin-top: 80px;
    margin-bottom: 15px;
    display: flex;
    justify-content: center;
}

.login-container button {
    padding: 10px 20px;
    background-color: #4279f1;
    color: white;
    border: none;
    cursor: pointer;
    border-radius: 6px;
}

#registerJump {
    margin-left: 10px;
}

.fade-in {
    opacity: 0;
    transition: opacity 1s;
}

#logo {
    display: block;
    margin-left: auto;
    margin-right: auto;
    width: 10%; /* 可以根据需要调整宽度 */
    margin-top: 100px;
}