padding

CSS的margin属性:详解margin属性

倖福魔咒の 提交于 2019-11-27 09:47:59
在网上看到的一篇文章,说的比较全面。原文地址:http://www.poluoluo.com/jzxy/201206/167007.html 你真的了解margin吗? 你知道margin有什么特性吗? 你知道什么是垂直外边距合并? margin在块元素、内联元素中的区别? 什么时候该用padding而不是margin? 你知道负margin吗? 你知道负margin在实际工作中的用途吗? 常见的浏览器下margin出现的bug有哪些?…… 写css,你少不了与margin打交道,而对于这个平时我们最常用的css属性我们并非十分了解。 Margin是什么 CSS 边距属性定义元素周围的空间。通过使用单独的属性,可以对上、右、下、左的外边距进行设置。也可以使用简写的外边距属性同时改变所有的外边距。——W3School 边界,元素周围生成额外的空白区。“空白区”通常是指其他元素不能出现且父元素背景可见的区域。——CSS权威指南 Margin的特性 margin始终是透明的。 margin通过使用单独的属性,可以对上、右、下、左的外边距进行设置。即:margin-top、margin-right、margin-bottom、margin-left。 外边距的 margin-width 的值类型有:auto | length | percentage

bootstrap多次弹窗导致页面左移,body上多了样式\"padding-right: 17px\" 解决办法

本秂侑毒 提交于 2019-11-27 09:40:23
一、产生原因 bootstrap多次弹窗导致页面左移,屏幕晃动的bug,原因有两个: 1、bootstrap模态框显示时,框架默认给body添加一个padding-right为17px的样式 2、modal-open 的overflow:hidden导致原本有的滚动条消失,窗口重新调整大小,造成屏幕晃动 二、解决办法 body { padding-right: 0px !important; } .modal-open { overflow-y: scroll; padding-right: 0 !important;} 来源: https://www.cnblogs.com/drw666/p/11356634.html

Absolute positioning ignoring padding of parent

左心房为你撑大大i 提交于 2019-11-27 09:06:56
问题 How do you make an absolute positioned element honor the padding of its parent? I want an inner div to stretch across the width of its parent and to be positioned at the bottom of that parent, basically a footer. But the child has to honor the padding of the parent and it's not doing that. The child is pressed right up against the edge of the parent. So I want this: but I'm getting this: <html> <body> <div style="background-color: blue; padding: 10px; position: relative; height: 100px;"> <div

gcc/clang lay out fields of a derived struct in the back-padding of base struct [duplicate]

狂风中的少年 提交于 2019-11-27 07:52:58
问题 This question already has answers here : Standard-layout and tail padding (5 answers) Closed 11 months ago . I'm confused with how gcc and clang lay out structs when both padding and inheritance are involved. Here's a sample program: #include <string.h> #include <stdio.h> struct A { void* m_a; }; struct B: A { void* m_b1; char m_b2; }; struct B2 { void* m_a; void* m_b1; char m_b2; }; struct C: B { short m_c; }; struct C2: B2 { short m_c; }; int main () { C c; memset (&c, 0, sizeof (C));

CSS padding overrides overflow?

对着背影说爱祢 提交于 2019-11-27 07:47:26
问题 Whats happening here ? #agendaTitle{ margin:0; padding:20em 0em 0em 0.75em; height:3em; overflow:hidden; background-color:#ff00ff; } The top padding is ridiculously high just to demonstrate - with a realistic requirement the div still increases height proportionally. Surely the overflow:hidden means I should just see a block of colour ? Occurs in FF and IE 回答1: In the default content-box box model on a display: block element, padding and height are added together to determine the total height

Padding a fixed number with leading zeros up to a fixed length [closed]

核能气质少年 提交于 2019-11-27 07:35:07
问题 It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. Closed 7 years ago . In Crystal Report using Visual Studio 2010, I am trying a to create a formula for the following scenario: x = any number (Fixed number of 8 digits, cant be less or greater) If Length of X is less than 8, pad the

How do I make openssl_encrypt pad the input to the required block size?

為{幸葍}努か 提交于 2019-11-27 07:14:59
问题 My code works if I manually pad my string to the length of 32. My question is: Is there a way to make the openSSL pad the data, or do I always have to do it for it? Working: openssl_encrypt ("my baba is over the ocean1111111", 'AES-256-CBC', $MY_SECRET_KEY,OPENSSL_RAW_DATA|OPENSSL_ZERO_PADDING,$MY_IV); Not working: openssl_encrypt ("my baba is over the ocean", 'AES-256-CBC', $MY_SECRET_KEY,OPENSSL_RAW_DATA|OPENSSL_ZERO_PADDING,$MY_IV); I solve this currently by self padding: $pad = 32 -

Remove unwanted White Space in WebView Android

白昼怎懂夜的黑 提交于 2019-11-27 07:13:10
I have started developing an App using WebView. Actually I am loading an Image with Webview (I like to use the built-in zoom controls of the class). I can successfully load the Image but I can see some irritating white spaces. I can't find the way to remove it. My Images are 750 * 1000 in size. I have attached my code below. webview.xml <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="wrap_content" android:layout_height="wrap_content" > <WebView android:id="@+id/webView" android:layout_width="wrap_content"

CSS Modules入门教程

雨燕双飞 提交于 2019-11-27 07:10:22
为什么引入CSS Modules 或者可以这么说,CSS Modules为我们解决了什么痛点。针对以往我写网页样式的经验,具体来说可以归纳为以下几点: 全局样式冲突 过程是这样的:你现在有两个模块,分别为A、B,你可能会单独针对这两个模块编写自己的样式,例如a.css、b.css,看一下代码 // A.js import './a.css' const html = '<h1 class="text">module A</h1>' // B.js import './b.css' const html = '<h1 class="text">module B</h1>' 下面是样式: /* a.css */ .text { color: red; } /* b.css */ .text { color: blue; } 导入到入口APP中 // App.js import A from './A.js' import B from './B.js' element.innerTHML = 'xxx' 由于样式是统一加载到入口中,因此实际上的样式合在一起(这里暂定为mix.css)显示顺序为: /* mix.css */ /* a.css */ .text { color: red; } /* b.css */ .text { color: blue; }

CSS3的一些笔记

拥有回忆 提交于 2019-11-27 07:03:21
阴影 box-shadow:x轴偏移量 y轴偏移量 (模糊半径、阴影扩展半径、颜色、投影方式) 模糊半径指阴影模糊大小,覆盖像素大小 扩展半径h指阴影大小 投影方式指内投影或外投影 边框背景图 border-image: url (上 下 左 右 切割的px大小) (repeat、round、strench) 线性渐变 background:linear-gradient(渐变方向 起始颜色,终止颜色) gradient:变化率,坡度 渐变方向:角度或者英文标识 文本溢出产生省略号 分三步: 1.设置文本不换行:white-space:nowrap 2.设置超出隐藏:overflow:hidden 3.设置省略号:text-overflow:ellipsis(省略号,clip为剪切) 文字阴影 text-shadow:x偏移px y偏移px 模糊px(0即可) color background相关的css background-origin 设置背景图片的原始位置。 background-origin:border-box | padding-box | content-box 与下边功能类似,border-box将图片位置从边角出开始放置。 padding-box将图片从padding处放置。 content-box将图片从内容(去掉padding的区域)放置。如下图所示