REM relative unit use case sharing
This time I will share with you the usage cases of REM relative units. What are the precautions for using REM relative units? The following is a practical case. Let’s take a look.
rem (font size of the root element) refers to the unit of font size relative to the root element. Simply put, it is a relative unit. When you see rem, you will definitely think of the em unit. Em (font size of the element) refers to the unit of font size relative to the parent element. They are actually very similar, except that one calculation rule relies on the root element and the other relies on the parent element for calculation.
As mentioned above, rem is adapted through the root element. The root element in the web page refers to htmlWe set the font size of html You can control the size of rem,for example.
1 |
|
We control the font size of our dom elements by changing the size of font-size in HTML.
In order to adapt to the compatibility of different resolutions, the font-size in HTML can be dynamically generated through js. We can also set it through media query for mainstream models. For example, here is the code below. If you don’t know much about media query, you can study http://www.w3cplus.com/content/css3-media-queries
1 |
|
. Of course, in setting html When font-size is used, we may also see this writing method, html { font-size: 62.5% }. This is mainly to facilitate the conversion between em and px. The initial value of em is 1em=16px. Obviously, if this is the case, for example, 1.2em = 19.2px, but we rarely see the size represented by 19.2px when setting it. , that is, when using px to express the size, the value does not have decimal places. When body{font-size: is set 62.5%;}, 1em = 16px*62.5% = 10px, 1.2em = 12px, isn’t this much simpler and more accurate~~.
# I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!
Recommended reading:
##Commonly used code organization summary
Detailed explanation of H5 Canvas use cases
The above is the detailed content of REM relative unit use case sharing. For more information, please follow other related articles on the PHP Chinese website!

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

Quark Netdisk and Baidu Netdisk are very convenient storage tools. Many users are asking whether these two softwares are interoperable? How to share Quark Netdisk to Baidu Netdisk? Let this site introduce to users in detail how to save Quark network disk files to Baidu network disk. How to save files from Quark Network Disk to Baidu Network Disk Method 1. If you want to know how to transfer files from Quark Network Disk to Baidu Network Disk, first download the files that need to be saved on Quark Network Disk, and then open the Baidu Network Disk client. , select the folder where the compressed file is to be saved, and double-click to open the folder. 2. After opening the folder, click "Upload" in the upper left corner of the window. 3. Find the compressed file that needs to be uploaded on your computer and click to select it.

CrystalDiskMark is a small HDD benchmark tool for hard drives that quickly measures sequential and random read/write speeds. Next, let the editor introduce CrystalDiskMark to you and how to use crystaldiskmark~ 1. Introduction to CrystalDiskMark CrystalDiskMark is a widely used disk performance testing tool used to evaluate the read and write speed and performance of mechanical hard drives and solid-state drives (SSD). Random I/O performance. It is a free Windows application and provides a user-friendly interface and various test modes to evaluate different aspects of hard drive performance and is widely used in hardware reviews

1. First, we enter NetEase Cloud Music, and then click on the software homepage interface to enter the song playback interface. 2. Then in the song playback interface, find the sharing function button in the upper right corner, as shown in the red box in the figure below, click to select the sharing channel; in the sharing channel, click the "Share to" option at the bottom, and then select the first "WeChat Moments" allows you to share content to WeChat Moments.

foobar2000 is a software that can listen to music resources at any time. It brings you all kinds of music with lossless sound quality. The enhanced version of the music player allows you to get a more comprehensive and comfortable music experience. Its design concept is to play the advanced audio on the computer The device is transplanted to mobile phones to provide a more convenient and efficient music playback experience. The interface design is simple, clear and easy to use. It adopts a minimalist design style without too many decorations and cumbersome operations to get started quickly. It also supports a variety of skins and Theme, personalize settings according to your own preferences, and create an exclusive music player that supports the playback of multiple audio formats. It also supports the audio gain function to adjust the volume according to your own hearing conditions to avoid hearing damage caused by excessive volume. Next, let me help you

NetEase Mailbox, as an email address widely used by Chinese netizens, has always won the trust of users with its stable and efficient services. NetEase Mailbox Master is an email software specially created for mobile phone users. It greatly simplifies the process of sending and receiving emails and makes our email processing more convenient. So how to use NetEase Mailbox Master, and what specific functions it has. Below, the editor of this site will give you a detailed introduction, hoping to help you! First, you can search and download the NetEase Mailbox Master app in the mobile app store. Search for "NetEase Mailbox Master" in App Store or Baidu Mobile Assistant, and then follow the prompts to install it. After the download and installation is completed, we open the NetEase email account and log in. The login interface is as shown below

After long pressing the play button of the speaker, connect to wifi in the software and you can use it. Tutorial Applicable Model: Xiaomi 12 System: EMUI11.0 Version: Xiaoai Classmate 2.4.21 Analysis 1 First find the play button of the speaker, and press and hold to enter the network distribution mode. 2 Log in to your Xiaomi account in the Xiaoai Speaker software on your phone and click to add a new Xiaoai Speaker. 3. After entering the name and password of the wifi, you can call Xiao Ai to use it. Supplement: What functions does Xiaoai Speaker have? 1 Xiaoai Speaker has system functions, social functions, entertainment functions, knowledge functions, life functions, smart home, and training plans. Summary/Notes: The Xiao Ai App must be installed on your mobile phone in advance for easy connection and use.

Cloud storage has become an indispensable part of our daily life and work nowadays. As one of the leading cloud storage services in China, Baidu Netdisk has won the favor of a large number of users with its powerful storage functions, efficient transmission speed and convenient operation experience. And whether you want to back up important files, share information, watch videos online, or listen to music, Baidu Cloud Disk can meet your needs. However, many users may not understand the specific use method of Baidu Netdisk app, so this tutorial will introduce in detail how to use Baidu Netdisk app. Users who are still confused can follow this article to learn more. ! How to use Baidu Cloud Network Disk: 1. Installation First, when downloading and installing Baidu Cloud software, please select the custom installation option.

Recently, Baidu Netdisk Android client has ushered in a new version 8.0.0. This version not only brings many changes, but also adds many practical functions. Among them, the most eye-catching is the enhancement of the folder sharing function. Now, users can easily invite friends to join and share important files in work and life, achieving more convenient collaboration and sharing. So how do you share the files you need to share with your friends? Below, the editor of this site will give you a detailed introduction. I hope it can help you! 1) Open Baidu Cloud APP, first click to select the relevant folder on the homepage, and then click the [...] icon in the upper right corner of the interface; (as shown below) 2) Then click [+] in the "Shared Members" column 】, and finally check all
