The problem when giving border

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Hello, I was trying to give a border, but it is said that it is incorrect. Actually this problem also happened on several previous lesson.

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```

div {
display: inline-block;
margin-left: 5px;
height: 100px;
width: 100px;
border-radius: 100%;
border: 2px solid black;
}

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make sure the browser zoom is set to 100% otherwise try a differnet browser

thanks. didnt notice that…