How to use pure CSS to achieve a flag-waving animation effect (source code attached)

不言
Release: 2018-09-04 11:04:59
Original
3671 people have browsed it

The content of this article is about how to use pure CSS to achieve a flag-waving animation effect (source code attached). It has certain reference value. Friends in need can refer to it. I hope it will be useful to you. Helps.

Effect preview

How to use pure CSS to achieve a flag-waving animation effect (source code attached)

Source code download

https://github.com/comehope/front- end-daily-challenges

Code Interpretation

Define dom, the container contains 15 elements:

<div>
    <span></span>
    <span></span>
    <span></span>
    <span></span>
    <span></span>
    <span></span>
    <span></span>
    <span></span>
    <span></span>
    <span></span>
    <span></span>
    <span></span>
    <span></span>
    <span></span>
    <span></span>
</div>
Copy after login

Centered display:

body {
    margin: 0;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: black;
}
Copy after login

Define container size:

.flag {
    width: 10em;
    height: 15em;
    font-size: 20px;
}
Copy after login

Set the line style:

.flag span {
    width: 0.25em;
    height: inherit;
    background-color: deepskyblue;
}
Copy after login

Make the lines tiled:

.flag {
    display: flex;
    justify-content: space-between;
}
Copy after login

Add 3d perspective effect:

.flag {
    transform: perspective(500px) rotateY(-20deg);
}
Copy after login

Define the animation effect of left and right movement:

.flag span {
    animation: wave 1.5s ease-in-out infinite alternate;
}

@keyframes wave {
    to {
        transform: translateX(2em);
    }
}
Copy after login

Set the element variable value:

.flag span:nth-child(1) {
    --n: 1;
}

.flag span:nth-child(2) {
    --n: 2;
}

/* 共 15 个元素,每元素的 --n 变量值等于它的序号。 */
/* 中间代码略 …… */

.flag span:nth-child(14) {
    --n: 14;
}

.flag span:nth-child(15) {
    --n: 15;
}
Copy after login

Let each line start the animation with a delay to form the effect of flying flags:

.flag span {
    animation-delay: calc(var(--n) * -0.1s);
}
Copy after login

Finally, add the light and shadow effect:

.flag span {
    background-color: ghostwhite;
}

@keyframes wave {
    to {
        transform: translateX(2em);
        background-color: deepskyblue;
    }
}
Copy after login

Done!

Related recommendations:

How to use pure CSS to achieve the button hover effect of the ball changing into a rectangular background (source code attached)

How to Using CSS and D3 to realize interactive animation of small fish swimming (with code)

The above is the detailed content of How to use pure CSS to achieve a flag-waving animation effect (source code attached). For more information, please follow other related articles on the PHP Chinese website!

Related labels:
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template
About us Disclaimer Sitemap
php.cn:Public welfare online PHP training,Help PHP learners grow quickly!