CSS @ rules (details) contain two grammatical rules in CSS: ordinary rules: composed of selectors, attributes and values. In previous studies, we mainly used this kind of rules; @ rules: starting with @ followed by The formal composition of keywords, also
There is such a piece of code: the result of if (RegExp.test(num)) is TRUE every time in IE, but in Fire Fox, if it is True the first time, it must be False the second time, and appears alternately thereafter. Let’s take a look at some past solutions:
Comprehensive analysis of CSS media query (@media) With the rapid popularity of mobile devices, users no longer just browse web content through traditional computer systems. More and more users are beginning to use smartphones, tablets or other devices of
Regular numbers in JavaScript are stored in 64-bit format IEEE-754, also known as “double precision floating point numbers”. These are numbers that we’re using most of the time, and we’ll talk about them in this chapter.
CSS changes the box model (box-sizing) The box-sizing attribute was introduced in CSS3. Some people explain that it can specify whether the width and height values specified with the width attribute and height attribute respectively include the padding
HTML inline elements and block-level elements HTML tags (elements) can be divided into two categories, namely block-level elements and inline elements (also called inline elements). 1. Inline element (inline) 1. The concept of inline element Inline elemen
How to introduce CSS files into HTML HTML can only present some information and has very limited performance capabilities. It needs to be used in conjunction with CSS to make the page more beautiful. In a web page, all style code can be moved out of the H
HTML text formatting When we use HTML tags, we must clearly know that in addition to certain semantics, tags also have default styles, such as <b>(bold), <em>(italic), etc. We do not need to use C to use these tags...</em></b>
1. Element drift removes an element from the page flow and drifts it in a certain direction. Other block elements will be placed under this element. When inline elements are injected into other block elements, the inline elements will surround this elemen
A few days ago, I took over the new site and observed the logs and found that only the home page returned the 200 0 64 status code, and other pages returned to normal. First of all, the 200 0 64 status code is certainly unreasonable. This is understandabl
