How to use pure CSS to achieve the effect of rainbow striped text (with code)

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Effect preview

Source code download

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

Code Interpretation

Define dom, the container contains text, and contains 4 for special effects, the data-text attribute value of is Same as text:

<p>
    web
    <span></span>
    <span></span>
    <span></span>
    <span></span>
</p>

Centered display:

html, body {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: black;
}

Define text style:

.rainbow {
    color: white;
    font-size: 300px;
    text-transform: uppercase;
    font-family: sans-serif;
    font-weight: bold;
    line-height: 1em;
    position: relative;
}

Add layers with pseudo elements to create a rainbow effect:

.rainbow span::before,
.rainbow span::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    overflow: hidden;
}

.rainbow span:nth-child(1)::before {
    color: orchid;
    z-index: 1;
    height: calc(100% - 10% * 1);
}

.rainbow span:nth-child(1)::after {
    color: mediumpurple;
    z-index: 2;
    height: calc(100% - 10% * 2);
}

.rainbow span:nth-child(2)::before {
    color: deepskyblue;
    z-index: 3;
    height: calc(100% - 10% * 3);
}

.rainbow span:nth-child(2)::after {
    color: cyan;
    z-index: 4;
    height: calc(100% - 10% * 4);
}

.rainbow span:nth-child(3)::before {
    color: mediumspringgreen;
    z-index: 5;
    height: calc(100% - 10% * 5);
}

.rainbow span:nth-child(3)::after {
    color: yellow;
    z-index: 6;
    height: calc(100% - 10% * 6);
}

.rainbow span:nth-child(4)::before {
    color: gold;
    z-index: 7;
    height: calc(100% - 10% * 7);
}

.rainbow span:nth-child(4)::after {
    color: tomato;
    z-index: 8;
    height: calc(100% - 10% * 8);
}

Add animation effect:

.rainbow span::before,
.rainbow span::after {
    animation: animate 0.8s infinite alternate;
    filter: opacity(0);
}

@keyframes animate {
    from {
        filter: opacity(0);
    }

    to {
        filter: opacity(1);
    }
}

Set a delay for the layer to enhance the dynamic:

.rainbow span:nth-child(1)::before {
    animation-delay: calc(0.8s - 0.1s * 1);
}

.rainbow span:nth-child(1)::after {
    animation-delay: calc(0.8s - 0.1s * 2);
}

.rainbow span:nth-child(2)::before {
    animation-delay: calc(0.8s - 0.1s * 3);
}

.rainbow span:nth-child(2)::after {
    animation-delay: calc(0.8s - 0.1s * 4);
}

.rainbow span:nth-child(3)::before {
    animation-delay: calc(0.8s - 0.1s * 5);
}

.rainbow span:nth-child(3)::after {
    animation-delay: calc(0.8s - 0.1s * 6);
}

.rainbow span:nth-child(4)::before {
    animation-delay: calc(0.8s - 0.1s * 7);
}

.rainbow span:nth-child(4)::after {
    animation-delay: calc(0.8s - 0.1s * 8);
}

Finally, set the original text to transparent color:

.rainbow {
    color: transparent;
}

You’re done!

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