我在这里作为Bootstrap设计Web表单应用程序的侧边栏有一个很好的参考:http: //startbootstrap.com/template-overviews/simple-sidebar/
这是它的代码:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta name="description" content="">
<meta name="author" content="">
<title>Simple Sidebar - Start Bootstrap Template</title>
<!-- Bootstrap Core CSS -->
<link href="css/bootstrap.min.css" rel="stylesheet">
<!-- Custom CSS -->
<link href="css/simple-sidebar.css" rel="stylesheet">
<!-- HTML5 Shim and Respond.js IE8 support of HTML5 elements and media queries -->
<!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
<!--[if lt IE 9]>
<script src="https://oss.maxcdn.com/libs/html5shiv/3.7.0/html5shiv.js"></script>
<script ….aspx代码：
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="SearchCustomer.aspx.cs" Inherits="WebApplication1.eyeofheaven.SearchCustomer" %>
<!DOCTYPE html>
<html lang="en" xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />
<link rel="stylesheet" type="text/css" href="StyleSheets/SearchCustomerStyle.css">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap-theme.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.min.js"></script>
<title>Search Customer</title>
</head>
<body>
<form id="form1" runat="server">
<div class="row">
<div class="twelve columns">
<!-- Header-->
<div class="container">
<nav role="navigation" class="navbar navbar-inverse navbar-fixed-top">
<!-- Brand and toggle get grouped for better mobile display -->
<div class="navbar-header">
<button type="button" data-target="#navbarCollapse" data-toggle="collapse" class="navbar-toggle">
<span class="sr-only">Toggle navigation</span>
<span …我有这个外部文件CreateConnection.php,它有一个类DBController及其以下函数.createconnection文件没有遇到任何错误.
里面的CreateConnection.php文件
<?php
class DBController
{
private $servername = "localhost";
private $username = "root";
private $password = "";
private $database = "mydatabase";
function mainConnect()
{
//call the function connectDatabase to $connect
$connect = $this->connectDatabase();
//call the function selectDatabase
$this->selectDatabase($connect);
if(!$connect)
{
//Otherwise, prompt connection failed
die("Connection failed: ".mysqli_connect_error());
}
}
function connectDatabase()
{
//Create connection
$connect = mysqli_connect($this->servername, $this->username, $this->password);
return $connect;
}
function selectDatabase($connect)
{
//Select database
mysqli_select_db($connect, $this->database);
}
}
?>
在这个文件中,我包含了外部CreateConnection.php,但是我的' $ connect '在调用mainConnect()函数时遇到了很多错误. Process.php …
如何在悬停时添加从纯色到背景渐变色的动画？可能是从左向右悬停时？
我有这个示例代码，但是当悬停时，更改颜色太即时了。
我尝试过使用这些参考文献：
但似乎无法弄清楚如何采用最简单的悬停方法。其他参考资料说在悬停时添加伪元素，但使用它时似乎有点复杂。只是想在为渐变文本设置动画时使用悬停元素。
如何使用这些类型的渐变文本颜色添加过渡？
示例代码：
.hover-grad-txt {
font-size:100px;
text-align:center;
color:#191335;
background-image:linear-gradient(to right, #191335, #191335);
-webkit-background-clip: text;
-webkit-text-fill-color: transparent;
transition:all 0.4s ease-in-out;
}
.hover-grad-txt:hover {
background-image:linear-gradient(to right, #01A5F8, #01BFD8);
-webkit-background-clip: text;
-webkit-text-fill-color: transparent;
}<span class="hover-grad-txt">Spear</span>您好，我正在构建一个 Rails 应用程序，我导入了大量数据并插入到数据库中。有些表没问题，有些表有一些错误，提示内存排序错误。
SQL错误
Mysql2::Error: Out of sort memory, consider increasing server sort buffer size
如何使用命令增加服务器排序缓冲区大小docker-compose.yml？
我试过这个：
version: '3'
services:
db:
image: mysql:latest
command:
- --default-authentication-plugin=mysql_native_password
- --innodb-buffer-pool-size=402653184
我确实添加了这个命令：
--innodb-buffer-pool-size=402653184
但我仍然遇到同样的错误，即内存不足。有什么方法可以使用以下方法增加缓冲区大小docker-compose.yml
我有这个HTML代码:
<div class="jumbotron">
<h1>Eye Of Heaven v3.0</h1>
</div>
我试过这个css代码,它不起作用,没有效果.应用它的正确方法是什么？
.jumbotron{
background-color:##8A2BE2;
text-align:center;
}