Need help wirh height

Mine is exactly the same as yours and I am getting the error message… must be a bug.

this is my code and i am getting the same error… ■■■■! must be a bug…

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

Is your browser zoom set to 100%? Use ctrl + 0 to set zoom to 100% or cmd + 0 for mac