background

问题 Can someone tell me why the following css is not validating? I've been trying to research this myself with no luck. All of the documentation I've read says this is the proper why to do gradients in css3. #header { color: white; font-size: 12px; font-family: Helvetica, Verdana, Arial, sans-serif; background: black; background: -moz-linear-gradient(top, rgba(0,0,0,0.65) 0%, rgba(0,0,0,0) 100%); background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(0,0,0,0.65)), color

问题 Short version: Disabling hardware acceleration with android:hardwareAccelerated="false" in xml changes the background color of my Theme.Sherlock.Light.DarkActionBar theme to a whiter "white". EDIT: this used to be the main question. I changed the title to emphasize the second problem. Disabling hardware acceleration for the mapView only, causes constant redraws. Long version: AFAIK hardware acceleration is enabled by default on API level 14 and up. (reference) Since I'm building and testing

问题 Short version: Disabling hardware acceleration with android:hardwareAccelerated="false" in xml changes the background color of my Theme.Sherlock.Light.DarkActionBar theme to a whiter "white". EDIT: this used to be the main question. I changed the title to emphasize the second problem. Disabling hardware acceleration for the mapView only, causes constant redraws. Long version: AFAIK hardware acceleration is enabled by default on API level 14 and up. (reference) Since I'm building and testing

问题 Short version: Disabling hardware acceleration with android:hardwareAccelerated="false" in xml changes the background color of my Theme.Sherlock.Light.DarkActionBar theme to a whiter "white". EDIT: this used to be the main question. I changed the title to emphasize the second problem. Disabling hardware acceleration for the mapView only, causes constant redraws. Long version: AFAIK hardware acceleration is enabled by default on API level 14 and up. (reference) Since I'm building and testing

问题 Hi I am developing an App which has a requirement to do syncing operation (data submission and retrieval) on web server. User can submit forms offline (ie. storing data to local db on device). And whenever network is available, background service should submit those data to web server. The detail requirement of background service is like: Background service will first check whether network is available or not if network is available, it will collect the data store in Local db (SQLite) on

问题 by default, the buttons from ttk module, have a one pixel border. how can I delete this border? below an example code: from tkinter import * from tkinter import ttk root = Tk() root.geometry("400x300") style=ttk.Style() style.configure("TButton", padding=0, background="#ffffff") # I colored the background border white to see it in the window.. but, I don't want it, I want to delete the border! MyButton = ttk.Button(root, text="I have a white border.. how can I delet it?") MyButton.place(x=16,

问题 I'm trying to apply a mask-image on the background of an element, but I don't want to mask its children. I've tried to change the z-index without any success. * { box-sizing: border-box; } body { margin: 0; background: #000; } .el { width: 100%; height: 60px; mask-repeat: no-repeat; mask-position: center; background-color: #fff; -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 60'%3E%3Cpath d='M100 60c-13.43 0-20.2-11.37-26.74-22.37C67.25

问题 I'm trying to apply a mask-image on the background of an element, but I don't want to mask its children. I've tried to change the z-index without any success. * { box-sizing: border-box; } body { margin: 0; background: #000; } .el { width: 100%; height: 60px; mask-repeat: no-repeat; mask-position: center; background-color: #fff; -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 60'%3E%3Cpath d='M100 60c-13.43 0-20.2-11.37-26.74-22.37C67.25

问题 My android app already set popupbackground as drawable xml. However, the popup dialog still cannot show the color I set. How to settle this issue? <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context="

问题 I have a UICollectionView and only one section. Is there a way to set the background color of every row? (in my case it would be a gradient from black to white) 回答1: CollectionViews don't really have a concept of a rows because it's designed to have a flexible layout. Your best option is likely to have the background of the cells have your pattern and remove all the padding/margin between the cells. This will be a problem if the last row isn't full, so if the number needs to be flexible you