html和css基础
iframe
安全性：始终使用 sandbox 属性
table
a.表格样式
- 可以使用
colgroupcol,来指定一列的样式，而不用这一列每一行上加class
<!DOCTYPE html>
<html lang="en-us">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>School timetable</title>
<style>
html {
font-family: sans-serif;
}
table {
border-collapse: collapse;
border: 2px solid rgb(200, 200, 200);
letter-spacing: 1px;
font-size: 0.8rem;
}
td,
th {
border: 1px solid rgb(190, 190, 190);
padding: 10px 20px;
}
td {
text-align: center;
}
caption {
padding: 10px;
}
</style>
</head>
<body>
<h1>School timetable</h1>
<table>
<colgroup>
<col>
<col>
<col style="background-color:#97DB9A;">
<col style="width: 42px;">
<col style="background-color: #97DB9A;">
<col style="background-color:#DCC48E; border:4px solid #C1437A;">
<col style="width: 42px;">
<col style="width: 42px;">
</colgroup>
<tr>
<td> </td>
<th>Mon</th>
<th>Tues</th>
<th>Wed</th>
<th>Thurs</th>
<th>Fri</th>
<th>Sat</th>
<th>Sun</th>
</tr>
<tr>
<th>1st period</th>
<td>English</td>
<td> </td>
<td> </td>
<td>German</td>
<td>Dutch</td>
<td> </td>
<td> </td>
</tr>
<tr>
<th>2nd period</th>
<td>English</td>
<td>English</td>
<td> </td>
<td>German</td>
<td>Dutch</td>
<td> </td>
<td> </td>
</tr>
<tr>
<th>3rd period</th>
<td> </td>
<td>German</td>
<td> </td>
<td>German</td>
<td>Dutch</td>
<td> </td>
<td> </td>
</tr>
<tr>
<th>4th period</th>
<td> </td>
<td>English</td>
<td> </td>
<td>English</td>
<td>Dutch</td>
<td> </td>
<td> </td>
</tr>
</table>
</body>
</html>
b.caption属性
- 表格增加一个标题
<table>
<caption>Dinosaurs in the Jurassic period</caption>
...
</table>
浙公网安备 33010602011771号