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Jack B Nimble
Jack B Nimble

Reputation: 5087

How can I disable inherited css styles?

So I am creating a container with rounded corners using the following method:

div.rounded {
    background: #CFFEB6 url('tr.gif') no-repeat top right;
}
div.rounded div {
    background: url('br.gif') no-repeat bottom right;
}
div.rounded div div {
    background: url('bl.gif') no-repeat bottom left;
}
div.rounded div div div {
    padding: 10px;
}

Now I want to use a div inside my container:

.button {
    border: 1px solid #999;
     background:#eeeeee url('');
    text-align:center;
}
.button:hover {
    background-color:#c4e2f2;
}

<div class='round'><div><div><div>
<div class='button'><a href='#'>Test</a></div>
</div></div></div></div>

However, with I put a div inside my nested divs, the button has the bl image in the corner.

How do I remove the inherited background image?

Upvotes: 34

Views: 173461

Answers (7)

Kurt Van den Branden
Kurt Van den Branden

Reputation: 12973

You can use the unset keyword to reset a property.

div.rounded div div div {
    background-image: unset; /* reset background */
    padding: unset; /* reset padding */
}

More info on developer.mozilla.org

Upvotes: 2

DreadPirateShawn
DreadPirateShawn

Reputation: 8430

Simplest is to class-ify all of the divs:

div.rounded {
    background: #CFFEB6 url('tr.gif') no-repeat top right;
}
div.rounded div.br {
    background: url('br.gif') no-repeat bottom right;
}
div.rounded div.br div.bl {
    background: url('bl.gif') no-repeat bottom left;
}
div.rounded div.br div.bl div.inner {
    padding: 10px;
}
.button {
    border: 1px solid #999;
     background:#eeeeee url('');
    text-align:center;
}
.button:hover {
    background-color:#c4e2f2;
}

And then use:

<div class='round'><div class='br'><div class='bl'><div class='inner'>
<div class='button'><a href='#'>Test</a></div>
</div></div></div></div>

Upvotes: 0

Wadih M.
Wadih M.

Reputation: 13462

Cascading Style Sheet are designed for inheritance. Inheritance is intrinsic to their existence. If it wasn't built to be cascading, they would only be called "Style Sheets".

That said, if an inherited style doesn't fit your needs, you'll have to override it with another style closer to the object. Forget about the notion of "blocking inheritance".

You can also choose the more granular solution by giving styles to every individual objects, and not giving styles to the general tags like div, p, pre, etc.

For example, you can use styles that start with # for objects with a specific ID:

<style>
#dividstyle{
    font-family:MS Trebuchet;
}
</style>
<div id="dividstyle">Hello world</div>

You can define classes for objects:

<style>
.divclassstyle{
    font-family: Calibri;
}
</style>
<div class="divclassstyle">Hello world</div>

Hope it helps.

Upvotes: 10

Itay Moav -Malimovka
Itay Moav -Malimovka

Reputation: 53606

Give the div you don't want him inheriting the property background too.

Upvotes: 0

acrosman
acrosman

Reputation: 12900

If you control both the HTML and CSS, I'd suggest switching to using ID's on all the divs needed for the rounded corner.

CSS

#d1 {
    background: #CFFEB6 url('tr.gif') no-repeat top right;
}
#d2 {
    background: url('br.gif') no-repeat bottom right;
}
#d3 {
    background: url('bl.gif') no-repeat bottom left;
}
#d4 {
    padding: 10px;
}

HTML

<div id="d1"><div id="d2"><div id="d3"><div id="d4">
    <div class='button'><a href='#'>Test</a></div>
</div></div></div></div>

Upvotes: 2

Aupajo
Aupajo

Reputation: 6065

The simple answer is to change

div.rounded div div div {
    padding: 10px;
}

to

div.rounded div div div {
    background-image: none;
    padding: 10px;
}

The reason is because when you make a rule for div.rounded div div it means every div element nested inside a div inside a div with a class of rounded, regardless of nesting.

If you want to only target a div that's the direct descendent, you can use the syntax div.rounded div > div (though this is only supported by more recent browsers).

Incidentally, you can usually simplify this method to use only two divs (one each for either top and bottom or left and right), by using a technique called Sliding Doors.

Upvotes: 13

zombat
zombat

Reputation: 94237

The cleanest solution is probably to specify your divs as exact children.

Try changing this:

div.rounded div div {
    background: url('bl.gif') no-repeat bottom left;
}

To this:

div.rounded > div > div {
    background: url('bl.gif') no-repeat bottom left;
}

Upvotes: 7

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