Is there a way to create a .testing element with a width of 100% (150px)?
<div class='debug'>
<div class='debug'>
<div class='testing'>Hello world!</div>
</div>
</div>
*,
*:before,
*:after {
box-sizing: border-box;
}
.debug {
min-height: 100px;
width: 150px;
border: 1px solid red;
}
.testing {
/* width: 150px; */
}
The calculated size is 148px. Why isn't it 150px?
It appears that the issue is related to the use of box-sizing: border-box. This setting causes the width of .debug to remain at 150px, with the border appearing inside the div. As a result, the available width for .teste is reduced to 148px. To maintain both widths at 150px, you can rearrange the properties as follows:
.debug {
width: 150px;
}
.teste {
width: 100%;
min-height: 100px;
border: 1px solid red;
}
Apply a negative left and right margin of the border-size value (1px) to the class .teste.
.teste {
margin-left: -1px;
margin-right: -1px;
}
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