Set css properties
CSS (Cascading Style Sheets) is a language used to control the style of web pages. It can set the font, color, border, layout and other properties of the web page. When developing a web page, setting CSS properties is a crucial step. This article will introduce in detail how to set CSS properties, as well as commonly used property values and methods.
1. How to set CSS properties
- Inline style: Add the style attribute to the HTML tag to set the CSS properties. For example:
<p style="color: red; font-size: 16px;">Hello, world!</p>
- Internal style sheet: add the style tag in the HTML head, and then set the CSS properties in it. For example:
<head>
<style>
p {
color: red;
font-size: 16px;
}
</style>
</head>
<body>
<p>Hello, world!</p>
</body>- External style sheet: Put the CSS code in a separate style sheet file, and then reference it in HTML through the link tag. For example:
<head> <link rel="stylesheet" href="style.css"> </head> <body> <p>Hello, world!</p> </body>
2. Commonly used CSS attributes and their attribute values
- Font attribute (font)
- ##font- family: Set the name of the font, which can be the name of a specific font (such as "Helvetica") or a general font (such as "serif", "sans-serif", "monospace", etc.).
- font-size: Set the font size in units such as pixels (px), percentage (%), em (multiples of the current font size as the basis), etc.
- font-style: Set the font style, which can be "normal" (normal), "italic" (italic) or "oblique" (oblique).
- font-weight: Set the weight of the font, which can be a number (such as 400) or a keyword (such as "normal", "bold").
- Color attribute (color)
- color: Set the color of the text, you can use the color name (such as "red", "green", "blue", etc.) or RGB values, RGBA values (such as "rgb(255, 0, 0)", "rgba(255, 0, 0, 0.5)"), etc.
- Background attribute (background)
- background-color: Set the background color of the element, you can use the color name or RGB value, RGBA value, etc. Way.
- background-image: Set the background image of the element, you can use a local image or a remote image address.
- background-repeat: Set the repeat mode of the background image, which can be "repeat" (repeat), "repeat-x" (repeat horizontally), "repeat-y" (repeat vertically) or "no-repeat" "(Not repeating).
- background-position: Set the position of the background image, you can use keywords (such as "left top", "center", "right bottom") or pixel values, percentage values, etc.
- Border attribute (border)
- border-width: Set the width of the border, you can use units such as pixels and em.
- border-style: Set the border style, which can be "solid" (solid line), "dotted" (dotted line), "dashed" (dashed line), etc.
- border-color: Set the color of the border, you can use color name or RGB value, RGBA value, etc.
- Size attributes (width, height)
- width: Set the width of the element, you can use units such as pixels and percentages.
- height: Set the height of the element in units such as pixels and percentages.
- Text attribute (text)
- text-align: Set the horizontal alignment of the text, which can be "left" (left-aligned), "right" (right-aligned), "center" (center-aligned), etc.
- text-decoration: Set the decoration effect of the text, which can be "none" (no decoration), "underline" (underline), "line-through" (strikethrough), etc.
- text-transform: Set the case conversion method of text, which can be "uppercase" (uppercase), "lowercase" (lowercase), "capitalize" (first letter capitalized), etc.
- Box attribute (box)
- margin: Set the margin of the element (the distance between the element and other elements), you can use pixels , percentage and other units.
- padding: Set the inner margin of the element (the distance between the content of the element and the border), which can be in pixels, percentages and other units.
- display: Set the display mode of the element, which can be "block" (block-level element), "inline" (inline element) or "inline-block" (inline block-level element), etc.
The above is the detailed content of Set css properties. For more information, please follow other related articles on the PHP Chinese website!
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