Article Introduction：The aspect-ratio attribute of CSS is used to set the aspect ratio of an element, such as 16:9 or 4:3, so that the browser automatically calculates the height or width according to the proportion. Common usage scenarios include: 1. The picture container maintains the proportion and avoids deformation; 2. The video embedding is more stable without padding skills; 3. The unified cell proportion in the grid layout. Notes include: After setting width and height, aspect-ratio may fail. Pay attention to browser compatibility and adjust the image display effect with object-fit.

2025-07-06 comment 0  550

Article Introduction：How to export PDFs that maintain image quality through Photoshop? Select the ZIP compression algorithm or the uncompressed image. Set resolution according to use (printing: 300dpi; network: 72dpi). Check Embed Profile to ensure color consistency. Before exporting, convert the image to CMYK mode (print). Appropriately increase image resolution to reduce information loss. Adjust resolution and compression ratio according to use: Network display can be reduced, printing needs to be kept high.

2025-04-06 comment 0  546

Article Introduction：Resizing Images Proportionally with MaxHeight and MaxWidth ConstraintsMaintaining the aspect ratio of an image is crucial when scaling it to fit...

2025-01-06 comment 0  1027

Article Introduction：Bootstrap provides two image centering strategies: the Flexbox mx-auto class and the Grid system. But using the img-fluid class will cause deformation. An elegant solution is to use object-fit: contains to maintain the original aspect ratio, or to set the maximum width, or to create placeholders using aspect ratio tricks. In addition, focus on performance optimization (responsive pictures, compress pictures, selecting appropriate formats) and checking element styles to avoid pitfalls. Proficient in these techniques can write more robust and more beautiful code.

2025-04-07 comment 0  410

Article Introduction：The most effective way to reduce the file size of a Word document is to compress images. First, through the "File" > "Information" > "Compress Pictures" options, select Apply to all or selected pictures, and set the resolution to 150ppi (for screen) or 300ppi (for printing), and check "Delete the crop area of ​​the picture" at the same time; second, adjust the image quality before insertion, such as saving in lower resolution or JPEG format; finally, adjust the image size correctly in Word, right-click "Size and Position", set the specific height and width, check "Lock aspect ratio" and "Relative to original picture size", and compress it again after visual adjustment to completely reduce the file size.

2025-07-12 comment 0  976

Article Introduction：To solve the problem of pixelation after image enlargement in Photoshop, you can try the following methods: 1. Use the "Smart Sharpening" function to moderately adjust the parameters to enhance clarity; 2. Use the "High Contrast Retention" overlay method to locally enhance details and control noise; 3. Use AI plug-ins such as "Neural Network Filter" for super-resolution amplification; 4. Tips to avoid pixelation in the early stage include the rational use of vector images, controlling the magnification ratio and choosing a suitable image format. These methods have different effects and need to be flexibly selected according to image quality and purpose.

2025-07-07 comment 0  928

Article Introduction：In HTML, the video player size can be set through the width and height attributes, but the video resolution is not changed, for example. 1. If only width or height is set, the other value will be automatically adjusted in proportion; 2. If the aspect ratio does not match the original proportion of the video, it will cause deformation; 3. To avoid deformation, you need to maintain the original ratio, such as 16:9 or 4:3; 4. It is more recommended to use CSS to control the size to achieve responsive layout, such as style="width:100%;max-width:640px;height:auto;", which is more flexible and suitable for mobile terminals.

2025-06-19 comment 0  667

Article Introduction：The key to exporting HTML5Canvas drawings as image files is to use the toDataURL() or toBlob() method. 1. toDataURL() can directly generate base64 image links, which are suitable for quick display or downloading, but may fail due to cross-domain problems; 2. toBlob() returns the Blob object through a callback, which is more efficiently suitable for uploading or processing large images, and supports specified format and compression ratio; 3. When exporting, you need to pay attention to transparent background and color offset issues, and if necessary, you should pre-process the canvas content to ensure the output effect. Master the basic usage of these two and adjust the details according to your needs to complete the export.

2025-06-25 comment 0  609

Article Introduction：Elements are container elements introduced by HTML5 for implementing responsive pictures, which select the most suitable image resource according to device characteristics through multiple and one tag. 1. It supports loading adaptive pictures according to different screen widths to improve loading performance; 2. It can provide priority to modern formats such as WebP, which will fall back to traditional formats if not supported; 3. It can switch different compositions according to the aspect ratio of the device to optimize visual display; in addition, it is always necessary to add descriptive alt text, ensure correct paths, test compatibility and standardized naming to improve maintainability.

2025-07-14 comment 0  529

Article Introduction：Bootstrap does not directly provide multi-graph vertically centered components. It can be implemented by cleverly using flex layout: set flex-direction: flex-column (vertical direction), justify-content-center (vertical center), align-items-center (horizontal center).容器需设置高度确保图片居中显示。 If the image height is different, try align-content: center to adjust the vertical spacing. Appropriately use the aspect-ratio attribute to control the aspect ratio of the picture and optimize the layout.

2025-04-07 comment 0  644

Article Introduction：Media features are used in media queries to apply CSS styles according to specific features of the device or viewport. 1. Common media features include width/height, direction, resolution and aspect ratio, which describe the capabilities of the device or the current state. 2. Media queries can be written using min-, max- or precise values ​​and combine multiple conditions through "and". 3. Actual use cases include responsive design for Retina displays, adjusting layouts according to directions, and performing responsive design at key breakpoints. 4. Notes include distinguishing device-width from viewport width, using relative units, cross-device testing, and avoiding excessive overlapping queries.

2025-06-23 comment 0  1013

Article Introduction：Photoshop's measurement tools play an important role in design and forensic analysis. ① In terms of design, it can be used to accurately align elements, confirm the size ratio and angle, such as controlling the size and spacing of the buttons through the "Rules" and "Alignment" functions, and using the measurement lines to view length and angle information; ② In forensic image analysis, unknown sizes can be converted by reference objects, combined with reference lines and free transformation to correct perspective to assist in height, distance or speed estimation; ③Usage techniques include double-clicking the measurement line to view data, resetting with "Clear measurement lines", cleaning the data before saving, and paying attention to the impact of image resolution on measurement accuracy.

2025-07-03 comment 0  949

Article Introduction：Most of the screen blur problems are caused by settings or drivers, and can be solved according to the following steps: 1. Check the resolution and zoom settings, select the recommended resolution and adjust the zoom ratio to 100%, and enable "Force Applications to Use DPI Scaling Behavior"; 2. Update or roll back the graphics card driver, and go to the official website to manually install the latest version of the driver; 3. Turn off the ClearType text enhancement function or recalibrate; 4. Check whether the connecting cable of the external monitor is tight and replace it with HDMI or DP cable to ensure the signal is stable. In most cases, the above methods can be used to solve the problem.

2025-07-03 comment 0  295

Article Introduction：Cleverly use CSS to achieve image hovering and reveal animation effects without additional elements! This article will explore in-depth how to use only elements to create stunning image reveal animations by cleverly manipulating padding, background color and image positioning. Core points: Only elements are needed to implement CSS reveal animations without any extra elements or pseudo-elements. The key to animation is to add padding to the image, then gradually reduce it to zero when hovering, while using background colors to create the visual effect of the image being revealed. The object-fit: cover and object-position: right properties are used to maintain the aspect ratio of the image and prevent the image from moving during animation. By adjusting

2025-02-09 comment 0  1001

Article Introduction：Dell launches a portable 14-inch 1080p monitor that can power and transmit display signals simultaneously with just one USB-C cable. More importantly, it supports both landscape and portrait modes, which is rare in portable displays. This monitor features a 14.0-inch 1920 x 1200 resolution IPS panel, 16:10 aspect ratio, anti-glare coating, and a contrast ratio of 1500:1. Dell said it also has 100% sRGB gamut coverage and 7ms response time. While 4K resolution will be better, the 14-inch 1080p is also great enough, especially when used as a secondary monitor for laptops or tablets. Use the USB-C interface to simultaneously power and transmit display signals

2025-03-07 comment 0  512

Article Introduction：To export videos that are suitable for YouTube, the key is to select the correct parameters. First, the video size and frame rate should match the content. It is recommended to 1920×1080 (FHD) or 3840×2160 (4KUHD). The frame rate is 24fps, 25fps, 30fps or 60fps according to the purpose. Secondly, it is recommended to use H.264 for the encoding format, and the preset can be selected as "match source aspect ratio" or "YouTube1080pHD". The code rate is VBR twice, 1080p is set to 15~20Mbps, and 4K is set to 35~50Mbps; thirdly, the audio is encoded with AAC, the sampling rate is 48kHz, and the two channels are enough; finally, the file name should be standardized before exporting, such as video_fin

2025-07-17 comment 0  575

Article Introduction：SqlParameter Parameters.Add vs. AddWithValue: Choosing the Best MethodWhen working with SQL commands, you may encounter the need to add...

2025-01-10 comment 0  674

Article Introduction：In Dave The Diver, there are some creatures that are not easy to catch. Or, catch alive that is. The spider crab is one of those very species, making it seem like the only way to bring these crustaceans back up to land is to viciously crack them up w

2025-01-10 comment 0  821

Article Introduction：Conditional Column CountingConsider a table named "Jobs" structured as follows:jobId, jobName, Prioritywhere "Priority" is an integer between 1...

2025-01-10 comment 0  829

Article Introduction：Prepare for Interview Like a Pro with Interview Questions CLI What is the Interview Questions CLI? The Interview Questions CLI is a command-line tool designed for JavaScript learners and developers who want to enhance their interview

2025-01-10 comment 0  1445