container

Description
Syntax
Examples
Links

Description

The container property for CSS is shorthand for container-name and container-type.

Syntax

CSS

container: value;

JS

object.style.container = "value";

Values

<'container'> = <'container-name'> [ / <'container-type'> ]?

<'container-name'> = none | <custom-ident>+

none

The query container has no query container name.

<custom-ident>

Specifies any valid identifier that is not misinterpreted as a keyword.

<'container-type'> = normal || [ size | inline-size ]

normal

The element is not a query container for any container size queries, but remains a query container for container style queries.

size

Establishes a query container for container size queries on both the inline and block axis. Applies layout containment, style containment, and size containment to the principal box.

inline-size

Establishes a query container for container size queries on the container’s own inline axis. Applies layout containment, style containment, and inline-size containment to the principal box.

<!doctype html>
<html>
<head>
    <style>
        .myclass1
        {
            display: flex;
            flex-wrap: wrap;
        }
        .myclass2
        {
            background-image: linear-gradient(135deg, white, lightgray);
            flex-grow: 1;
            min-height: 100px;
        }
        @container mycontainername (width < 500px)
        {
            .myclass2
            {
                flex-basis: 100%;
            }
        }
    </style>
</head
<body>
    <button>initial</button>
    <button>none</button>
    <button value="mycontainername">custom-ident</button>
    <div class="myclass1">
        <div class="myclass2">container-name</div>
        <div class="myclass2">container-name</div>
        <div class="myclass2">container-name</div>
        <div class="myclass2">container-name</div>
        <div class="myclass2">container-name</div>
    </div>
    <script>
        function myfunction(myparameter)
        {
            const mytarget = myparameter.target;
            const myproperty = mytarget.value || mytarget.innerHTML;
            document.querySelector(".myclass1").style.container = myproperty + " / inline-size";
        }
        for(const mybutton of document.querySelectorAll("button"))
        {
            mybutton.addEventListener("mouseover", myfunction);
        }
    </script>
</body>
</html>

4 · container-type · normal

5 · container-type · size

6 · container-type · inline-size

7 · container-type · JS

<!doctype html>
<html>
<head>
    <style>
        .myclass1
        {
            display: flex;
            flex-wrap: wrap;
        }
        .myclass2
        {
            background-image: linear-gradient(135deg, white, lightgray);
            flex-grow: 1;
            min-height: 100px;
        }
        @container(width < 500px)
        {
            .myclass2
            {
                flex-basis: 100%;
            }
        }
    </style>
</head
<body>
    <button>initial</button>
    <button>normal</button>
    <button>size</button>
    <button>inline-size</button>
    <div class="myclass1">
        <div class="myclass2">container-type</div>
        <div class="myclass2">container-type</div>
        <div class="myclass2">container-type</div>
        <div class="myclass2">container-type</div>
        <div class="myclass2">container-type</div>
    </div>
    <script>
        function myfunction(myparameter)
        {
            document.querySelector(".myclass1").style.container = "none / " + myparameter.target.innerHTML;
        }
        for(const mybutton of document.querySelectorAll("button"))
        {
            mybutton.addEventListener("mouseover", myfunction);
        }
    </script>
</body>
</html>