How to create dynamic effects using CSS Positions layout

How to use CSS Positions layout to create dynamic effects

CSS Positions layout is a commonly used technology in web design. It can help us create various dynamic effects, such as Suspension menu, carousel, etc. This article will introduce some common dynamic effects and give corresponding code examples to help readers better understand and use CSS Positions layout.

1. Suspended menu

Suspended menu is a very common element in web design. It can be fixed at a certain position on the screen when the user scrolls the page, providing convenient navigation functions. The following is a simple floating menu code example:

HTML part:

<div class="menu">
    <ul>
        <li><a href="#">首页</a></li>
        <li><a href="#">关于我们</a></li>
        <li><a href="#">产品</a></li>
        <li><a href="#">联系我们</a></li>
    </ul>
</div>

CSS part:

.menu {
    position: fixed;
    top: 50px;
    right: 50px;
}

.menu ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.menu li {
    display: inline-block;
    margin-right: 10px;
}

.menu li a {
    text-decoration: none;
    color: #000;
}

By setting the of .menu position: fixed attribute, it will be fixed in the upper right corner of the screen, top and right attributes can adjust the position of the menu. By setting the .menu ul style, the menu items are arranged horizontally. The list-style attribute can remove the default list style, padding and marginAttribute is used to adjust the spacing of menu items. .menu li a style is used to set the color of menu items and remove the default underline.

2. Carousel image

Carousel image is a common dynamic effect in web design. It can automatically play a group of pictures or content in a loop to provide a better user experience. The following is a simple carousel code example:

HTML part:

<div class="slider">
    <ul>
        <li><img src="image1.jpg" alt=""></li>
        <li><img src="image2.jpg" alt=""></li>
        <li><img src="image3.jpg" alt=""></li>
    </ul>
</div>

CSS part:

.slider {
    position: relative;
    width: 500px;
    height: 300px;
    overflow: hidden;
}

.slider ul {
    list-style: none;
    padding: 0;
    margin: 0;
    width: 300%;
    position: absolute;
    left: 0;
}

.slider li {
    float: left;
    width: 33.33%;
    height: 100%;
}

.slider li img {
    width: 100%;
    height: 100%;
}

By setting the ## of .slider #position: relative attribute, it will serve as a carousel container, and the width and height can be adjusted according to actual needs. By setting the position: absolute attribute of .slider ul, it will arrange the pictures in the container horizontally, and set the left: 0 attribute so that its initial position is at the end left. By setting the float: left property of .slider li and the width to 33.33%, each carousel item is in one row and occupies the of the container. 1/3 width. By setting the .slider li img style, the image fills the width and height of each carousel item.

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