Which CSS feature helps in hiding elements on smaller screens in responsive design?0.5 Marksdisplay: none;visibility: hidden;hidden: true;opacity: 0;

The CSS feature that helps in hiding elements on smaller screens in responsive design is display: none;.

Here's how it works:

1. First, you need to use a media query to target the specific screen size where you want the element to disappear. For example, if you want to hide an element on screens smaller than 600px, you would write:

@media only screen and (max-width: 600px) {
    /* CSS properties go here */
}

2. Inside this media query, you select the element you want to hide and set its display property to none. For example, if you want to hide a div with the class "example", you would write:

@media only screen and (max-width: 600px) {
    .example {
        display: none;
    }
}

This will hide the element on screens smaller than 600px.

The other options you mentioned (visibility: hidden;, hidden: true;, opacity: 0;) can also hide elements, but they do not remove the element from the document flow. This means that the space for the element will still be reserved on the page, which is usually not what you want in a responsive design.