How to clear default styles in HTML
HTML is a markup language used to create web pages. In HTML, different elements have different default styles, which are automatically applied by the browser. Sometimes, we need to clear these default styles to make the page more flexible and customizable.
Why do you need to clear the default style?
The default style may interfere with us designing our own style for the web page. For example, the title and body of a web page have default fonts and line spacing. If these styles are not cleared, we cannot freely choose and set our own fonts and line spacing. Default styles can also cause differences between browsers, making web pages appear inconsistently in different browsers. Therefore, clearing the default styles can make our web pages more consistent and controllable.
Method 1: Use the reset.css file
The Reset CSS file is a pre-written style sheet that includes style reset for all HTML elements. We just need to introduce it into the HTML file to clear the default style.
The following is a simple reset.css file:
* {
margin: 0;
padding: 0;
border: 0;
font-size: 100%;
font: inherit;
vertical-align: baseline;
}This file resets the margins, padding, borders, font size, and vertical alignment of all elements to their default values.
We only need to add the following code to the head of the HTML file and save the reset.css file in the CSS folder in the project folder:
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>My Website</title> <link rel="stylesheet" href="css/reset.css"> </head> <body> <!-- 页面内容 --> </body> </html>
Method 2: Use the selector
If we don’t want to introduce a file that resets the style, we can also use the selector to clear the default style.
The following are some commonly used selectors:
/* 清除所有元素的边距和内边距 */
* {
margin: 0;
padding: 0;
}
/* 清除所有元素的默认样式 */
html, body, div, span, applet, object, iframe, h1, h2, h3, h4, h5, h6, p, blockquote, pre, a, abbr, acronym, address, big, cite, code, del, dfn, em, img, ins, kbd, q, s, samp, small, strike, strong, sub, sup, tt, var, b, u, i, center, dl, dt, dd, ol, ul, li, fieldset, form, label, legend, table, caption, tbody, tfoot, thead, tr, th, td {
margin: 0;
padding: 0;
border: 0;
outline: 0;
font-size: 100%;
vertical-align: baseline;
background: transparent;
}
/* 清除链接默认样式 */
a {
text-decoration: none;
color: inherit;
}
/* 清除列表默认样式 */
ul, ol {
list-style: none;
}
/* 清除图片默认边框 */
img {
border: none;
}
/* 清除表格默认边框 */
table {
border-collapse: collapse;
border-spacing: 0;
}We only need to add the above selectors to the CSS file.
Summary
Clearing the default style is one of the important steps in making a web page. Using a reset.css file or selector can quickly and efficiently clear default styles, making our pages more flexible and customizable.
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