Audio video
<audio src = "path" controls = "controls" loop (auto loop) autoplay (enter page autoplay) muted (mute)>
<video src="路径" controls="controls">
CSS style sheet reference
<div style = "color: red; border: 2px solid blue; width: 300px;"> first CSS style (inline) </ div>
Inline reference method, add attributes directly in the html file tag.
<head><style>.font_size{color:red;font-size:20px;}</style></head>
<body> <div class = "font_size"> Second CSS style (internal) </ div> </ body>
Internal reference method, modify the attributes in the html cultural head (recommended) section, but still operate in the html file
<link href="style.css" rel="stylesheet" type="css">
<div class = "font_color"> The third CSS style (external) </ div>
style.css
.font_color{
color: purple; text color
font-size: 15px; text size
min-height: 500px; minimum height
max-width: 400px; maximum width
background color
background-image: url ( ./material/LINA1.jpg ); background image
background-position-x: right; background horizontal position, aligned side
background-attachment: fixed; background image does not scroll with the page
background-repeat: no-repeat; whether the background image is tiled, no-repeat is not tiled
background-size: 300px 400px;} background width height
For external reference, create a new css file and write the attributes that need to be modified into the css file in this format, XX element name, .XXclass class name, #XXid name Then use link href = "pathname" to refer the css file to the html file.