Home Web Front-end HTML Tutorial DIV CSS block box floating design_html/css_WEB-ITnose

DIV CSS block box floating design_html/css_WEB-ITnose

Jun 24, 2016 pm 12:01 PM
block float design

During page layout, absolute positioning can be used to achieve this, but since the positions of other blocks will not change accordingly when a certain block frame is adjusted, this is not the preferred method of layout. But with a floating block box, it can be moved left or right until its outer edge touches the border of its containing block or the border of another floating block. And because the float is not in the document's normal flow, the block box in the document's normal flow behaves as if the float does not exist.

This article summarizes several simple examples of floating block boxes:

1. Sorting of non-floating block boxes

<html>	<head>		<title>DIV+CSS</title>		<style>			body{					margin:0px;			}			div{					width:200px;					height:200px;					font-size:40px;					text-align:center;			}			#one{				background:red;			}			#two{				background:green;			}			#three{				background:yellow;			}		</style>	</head>	<body>			<div id="one">				框(1)			</div>			<div id="two">				框(2)			</div>			<div id="three">				框(3)			</div>	</body></html>
Copy after login

2. Float the first block box to the right

Redefine the #one selector, just add one line of code:

			#one{				float:right;				background:red;			}
Copy after login

The running results are as follows:



3. Set the first one to float to the left

In order for everyone to see the effect, the sizes of the three blocks must be adjusted, so I re-wrote the code directly.

<html>	<head>		<title>DIV+CSS</title>		<style>			body{					margin:0px;			}			div{					height:200px;					font-size:40px;					text-align:center;			}			#one{				width:200px;				float:left;				background:red;			}			#two{				width:240px;				background:green;			}			#three{				width:200px;				background:yellow;			}		</style>	</head>	<body>			<div id="one">				框(1)			</div>			<div id="two">				框(2)			</div>			<div id="three">				框(3)			</div>	</body></html>
Copy after login

Running results:

It is not difficult to see that box (2) is covered by box (1). Only the extra 40px of width is visible. Because after the frame (1) is floated, it does not belong to the scope of the document flow, which is equivalent to its original position being vacant, so the frame (2) is naturally filled in.

4. Set all three boxes to float to the left

This only requires adding a line of code to the div{ } in Example 1:

float:left;
Copy after login
Operation effect:


5. Set three boxes to the left (Insufficient space)

You only need to modify the sizes of the three blocks accordingly

<html>	<head>		<title>DIV+CSS</title>		<style>			body{				margin:0px;			}			div{				float:left;									height:200px;				font-size:40px;				text-align:center;			}			#one{				width:500px;				background-color:red;			}			#two{				width:400px;				background:green;			}			#three{				width:600px;				background:yellow;			}		</style>	</head>	<body>			<div id="one">				框(1)			</div>			<div id="two">				框(2)			</div>			<div id="three">				框(3)			</div>	</body></html>
Copy after login
Run results:

If there is insufficient space , the block automatically moves down

6. The third block is "stuck" by the first one

Block 3 is not on top There is enough space. When moving down, the extra part of block 1 will automatically block the movement of block 3.

Finally, let’s introduce another attribute: clear (clear attribute, specifying whether an element is allowed to have elements floating next to it)

clear:none;clear:left;clear:right;clear:both;
Copy after login
There are several types in total values, respectively corresponding to different cleaning effects. By using this attribute flexibly, many problems can be easily solved.



Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
1 months ago By 尊渡假赌尊渡假赌尊渡假赌
Two Point Museum: All Exhibits And Where To Find Them
1 months ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Retro trend! HMD and Heineken jointly launch flip phone: transparent shell design Retro trend! HMD and Heineken jointly launch flip phone: transparent shell design Apr 17, 2024 pm 06:50 PM

According to news on April 17, HMD teamed up with the well-known beer brand Heineken and the creative company Bodega to launch a unique flip phone - The Boring Phone. This phone is not only full of innovation in design, but also returns to nature in terms of functionality, aiming to lead people back to real interpersonal interactions and enjoy the pure time of drinking with friends. Boring mobile phone adopts a unique transparent flip design, showing a simple yet elegant aesthetic. It is equipped with a 2.8-inch QVGA display inside and a 1.77-inch display outside, providing users with a basic visual interaction experience. In terms of photography, although it is only equipped with a 30-megapixel camera, it is enough to handle simple daily tasks.

ZTE 5G portable Wi-Fi U50S goes on sale for NT$899 at first launch: top speed 500Mbps ZTE 5G portable Wi-Fi U50S goes on sale for NT$899 at first launch: top speed 500Mbps Apr 26, 2024 pm 03:46 PM

According to news on April 26, ZTE’s 5G portable Wi-Fi U50S is now officially on sale, starting at 899 yuan. In terms of appearance design, ZTE U50S Portable Wi-Fi is simple and stylish, easy to hold and pack. Its size is 159/73/18mm and is easy to carry, allowing you to enjoy 5G high-speed network anytime and anywhere, achieving an unimpeded mobile office and entertainment experience. ZTE 5G portable Wi-Fi U50S supports the advanced Wi-Fi 6 protocol with a peak rate of up to 1800Mbps. It relies on the Snapdragon X55 high-performance 5G platform to provide users with an extremely fast network experience. Not only does it support the 5G dual-mode SA+NSA network environment and Sub-6GHz frequency band, the measured network speed can even reach an astonishing 500Mbps, which is easily satisfactory.

Starting at 649 yuan, Kubi Cube Xiaoku Tablet 2 Lite is here: 11-inch eye-protecting large screen + 8000mAh large battery Starting at 649 yuan, Kubi Cube Xiaoku Tablet 2 Lite is here: 11-inch eye-protecting large screen + 8000mAh large battery Mar 05, 2024 pm 05:34 PM

According to news on March 4, Kubi Rubik's Cube will launch the "Xiaoku Tablet 2Lite" tablet computer on March 5, with an initial price of 649 yuan. It is reported that the new tablet is equipped with Unisoc’s T606 processor, which uses a 12nm process and consists of two 1.6GHz ArmCortex-A75 CPUs and six ArmCortex-A55 processors. The screen uses a 10.95-inch IPS eye-protection screen with a resolution of 1280x800 and a brightness as high as 350 nits. In terms of imaging, Xiaoku Tablet 2Lite has a 13-megapixel main camera on the rear and a 5-megapixel selfie lens on the front. It also supports 4G Internet access/calls, Bluetooth 5.0, and Wi-Fi5. In addition, the official claimed that this tablet&l

Teclast M50 Mini tablet is here: 8.7-inch IPS screen, 5000mAh battery Teclast M50 Mini tablet is here: 8.7-inch IPS screen, 5000mAh battery Apr 04, 2024 am 08:31 AM

According to news on April 3, Taipower’s upcoming M50 Mini tablet computer is a device with rich functions and powerful performance. This new 8-inch small tablet is equipped with an 8.7-inch IPS screen, providing users with an excellent visual experience. Its metal body design is not only beautiful but also enhances the durability of the device. In terms of performance, the M50Mini is equipped with the Unisoc T606 eight-core processor, which has two A75 cores and six A55 cores, ensuring a smooth and efficient running experience. At the same time, the tablet is also equipped with a 6GB+128GB storage solution and supports 8GB memory expansion, which meets users’ needs for storage and multi-tasking. In terms of battery life, M50Mini is equipped with a 5000mAh battery and supports Ty

Honor Magic V3 debuts AI defocus eye protection technology: effectively alleviates the development of myopia Honor Magic V3 debuts AI defocus eye protection technology: effectively alleviates the development of myopia Jul 18, 2024 am 09:27 AM

According to news on July 12, the Honor Magic V3 series was officially released today, equipped with the new Honor Vision Soothing Oasis eye protection screen. While the screen itself has high specifications and high quality, it also pioneered the introduction of AI active eye protection technology. It is reported that the traditional way to alleviate myopia is "myopia glasses". The power of myopia glasses is evenly distributed to ensure that the central area of ​​​​sight is imaged on the retina, but the peripheral area is imaged behind the retina. The retina senses that the image is behind, promoting the eye axis direction. grow later, thereby deepening the degree. At present, one of the main ways to alleviate the development of myopia is the "defocus lens". The central area has a normal power, and the peripheral area is adjusted through optical design partitions, so that the image in the peripheral area falls in front of the retina.

How to design the end page of ppt to be attractive enough How to design the end page of ppt to be attractive enough Mar 20, 2024 pm 12:30 PM

At work, ppt is an office software often used by professionals. A complete ppt must have a good ending page. Different professional requirements give different ppt production characteristics. Regarding the production of the end page, how can we design it more attractively? Let’s take a look at how to design the end page of ppt! The design of the ppt end page can be adjusted in terms of text and animation, and you can choose a simple or dazzling style according to your needs. Next, we will focus on how to use innovative expression methods to create a ppt end page that meets the requirements. So let’s start today’s tutorial. 1. For the production of the end page, any text in the picture can be used. The important thing about the end page is that it means that my presentation is over. 2. In addition to these words,

Huawei Pocket 2's first ultra-cooling three-dimensional cooling system: the overall thermal conductivity area is increased by 80% Huawei Pocket 2's first ultra-cooling three-dimensional cooling system: the overall thermal conductivity area is increased by 80% Feb 22, 2024 pm 08:04 PM

According to news on February 22, Huawei’s Pocket2 folding flagship officially debuted today. It adopts a smart body design and is available in four colors: Tahitian gray, rococo white, taro purple, and elegant black. According to reports, Huawei Pocket2 is the first ultra-cooling three-dimensional heat dissipation system, the industry's first mid-frame VC+ three-dimensional heat dissipation structure, and uses the industry's highest thermal conductivity graphene material, with an equivalent thermal conductivity of 1800W/m·K, and an 80% increase in the overall thermal conductivity area. Regarding the crease issue that everyone is concerned about, Huawei Pocket 2 is equipped with the industry's first basalt water drop hinge. The screen remains flat after long-term use, and the double-arm lever gear makes it easy to open and close. In terms of communications, Huawei Pocket 2 supports super-powerful Lingxi communications, and is the first small foldable phone to support two-way Beidou satellite messages. Hold

New stacking process! Xiaomi MIX Fold 4 is equipped with Jinshajiang 'three-dimensional special-shaped' battery for the first time New stacking process! Xiaomi MIX Fold 4 is equipped with Jinshajiang 'three-dimensional special-shaped' battery for the first time Jul 20, 2024 am 03:20 AM

According to news on July 19, Xiaomi MIX Fold 4, the first flagship folding new phone, was officially released tonight and is equipped with a "three-dimensional special-shaped battery" for the first time. According to reports, Xiaomi MIX Fold4 has achieved a major breakthrough in battery technology and designed an innovative "three-dimensional special-shaped battery" specifically for folding screens. Traditional folding screen devices mostly use conventional square batteries, which have low space utilization efficiency. In order to solve this problem, Xiaomi did not use the common winding battery cells, but developed a new lamination process to create a new form of battery, which greatly improved the space utilization. Battery Technology Innovation In order to accurately alternately stack positive and negative electrode sheets and ensure the safe embedding of lithium ions, Xiaomi has developed a new ultrasonic welding machine and lamination machine to improve welding and cutting accuracy.

See all articles