reader/pages/loginPage/loginPage.wxss

.login-wrapper{
    width: 100%;
    height: 100%;
    overflow: hidden;
}
.btn {
    margin: 0;
    padding: 0;
    font-size: 36rpx;
    color: #16B016;
    background: #fff;
    width: 100%;
}

.btn::after {
    border: none;
}