CSS

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Insert CSS

Three ways to insert css:

External style sheet

<head>
<link rel="stylesheet" type="text/css" href="mystyle.css">
</head>

Internal style sheet

<head>
<style>
h1, h2 {
    color: maroon;
    margin-left: 40px;
} 
</style>
</head>

Inline style
An inline style may be used to apply a unique style for a single element.

<h1 style="color:blue;margin-left:30px;">This is a heading</h1>

提示

In vue, to add multiple class, this way is commended:

<p :class="['thin', 'color']"> something </p>

Multiple Style Sheets

If some properties have been defined for the same selector (element) in different style sheets, the value from the last read style sheet will be used.

An inline style has the highest priority, and will override external and internal styles and browser defaults.

<style>
h1 {
    color: orange;
}
h1 {
    color: red;
}
</style>
<link rel="stylesheet" type="text/css" href="mystyle.css">
</head>
<!-- Sequence: orange - red - style in 'mystyle.css'. -->

colors

RGB Value(red, greenm blue), such as rgb(60, 179, 113)
HEX Value (#ff0000)
HSL Value: hsl(hue, saturation, lightness)

<h3 style="background-color:hsl(300, 76%, 72%);">hsl(300, 76%, 72%)<h3>

RGBA Value (red, green, blue, alpha)
aplha parameter is a number between 0.0 (fully transparent) and 1.0 (not transparent at all)
HSLA Value hsla(hue, saturation, lightness, alpha)

CSS

# Insert CSS

# Multiple Style Sheets

# colors

Insert CSS

Multiple Style Sheets

colors