<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<style>
body {
display: flex;
align-items: center;
justify-content: center;
height: 100vh;
margin: 0;
}
.cross {
position: relative;
width: 100px;
height: 100px;
}
.line {
position: absolute;
background-color: black;
}
.horizontal-line {
width: 100%;
height: 2px;
top: 50%;
transform: translateY(-50%);
}
.vertical-line {
height: 100%;
width: 2px;
left: 50%;
transform: translateX(-50%);
}
</style>
<title>Centered Cross</title>
</head>
<body>
<div class="cross">
<div class="line horizontal-line"></div>
<div class="line vertical-line"></div>
</div>
</body>
</html>
tsubasa