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| <style>
html {
height: 100vh;
}
body {
height: 100%;
}
.flexbox-container {
display: flex;
height: 100%;
justify-content: center;
align-items: center;
}
.flexbox-item {
background-color: #ddd;
}
</style>
<div class="flexbox-container">
<div class="flexbox-item">hello world!</div>
</div>
|
