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index.html
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<!DOCTYPE html>
<html>
<head>
<title>50KFC</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<style>
.container {
display: flex;
flex-wrap: wrap;
}
.item {
width: 100%;
padding: 10px;
box-sizing: border-box;
}
@media (min-width: 768px) {
.container {
flex-direction: row;
/* 在PC端左右排列 */
}
.item {
width: 50%;
/* 在PC端宽度为50% */
}
}
.text {
font-family: "Microsoft YaHei", sans-serif;
font-size: 16px;
line-height: 1.5;
color: #333;
text-align: justify;
padding: 20px;
border: 5px solid #ccc;
background-color: #f5f5f5;
margin-bottom: 20px;
}
.text strong {
color: #666;
}
.item img {
width: 100%;
}
</style>
</head>
<body>
<div class="container">
<div class="item">
<div class="text">
已知三角形△ABC AB=25 AC=18 sin∠BAC=0.2 过AB中点K 作KF⊥AB交AC于F ，连接中点K及三角形顶点C，得三角形KFC，求证KFC=50
</div>
</div>
<div class="item">
<img src="images/kfc-1.jpg" alt="50KFC">
</div>
</div>
</body>
</html>