How to use pure CSS to achieve the effect of a green pig-CSS Tutorial-php.cn

How to use pure CSS to achieve the effect of a green pig

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Release： 2018-08-07 10:08:10

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The content of this article is about how to use pure CSS to achieve the effect of a green pig. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.

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Daily front-end practical series Please download all source codes from github:

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

Code Interpretation

Define dom. The container contains 3 elements, representing ears, eyes, and nose respectively:

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

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Centered display:

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

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Set the common attributes of pseudo elements. Pseudo elements are used in many places later. Element:

.pig::before,
.pig::after,
.pig *::before,
.pig *::after {
    content: '';
    position: absolute;
}

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Define the container size:

.pig {
    width: 12em;
    height: 10em;
    font-size: 20px;
    background-color: #50a032;
    border: 0.2em solid #2b4d13;
}

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Use the rounded corner attribute to draw the outline of the head:

.pig {
    border-radius: 50% 50% 50% 50% / 55% 60% 40% 45%;
}

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Draw the outline of the nose:

.pig {
    position: relative;
}

.nose {
    position: absolute;
    width: 4.6em;
    height: 4em;
    background-color: #82b923;
    border: 0.1em solid #1d3c07;
    border-radius: 50% 50% 45% 45% / 55% 55% 45% 45%;
    top: 3em;
    left: 4.2em;
}

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Use pseudo elements to draw the nostrils:

.nose::before,
.nose::after {
    width: 1.2em;
    background-color: #0f2d00;
    border-radius: 50%;
    top: 1.4em;
}

.nose::before {
    left: 0.8em;
    height: 1.8em;
}

.nose::after {
    right: 0.8em;
    height: 1.6em;
}

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Draw the outline of the eyes:

.eyes::before,
.eyes::after {
    width: 2.8em;
    height: 2.8em;
    background: white;
    border-radius: 50%;
    border: 0.1em solid #193c09;
    top: 3.6em;
}

.eyes::before {
    left: 0.8em;
}

.eyes::after {
    right: 0.3em;
}

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Draw the eyeballs with radial gradients:

.eyes::before,
.eyes::after {
    background: 
        radial-gradient(
            circle at var(--eyeball-left) 1.5em,
            black 0.4em,
            transparent 0.4em
        ),
        white;
}

.eyes::before {
    --eyeball-left: 1em;
}

.eyes::after {
    --eyeball-left: 1.9em;
}

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Draw the outline of the inner ear:

.ears::before,
.ears::after {
    width: 0.8em;
    height: 0.9em;
    background-color: #2f6317;
    border: 0.1em solid #1d3a0d;
    border-radius: 45% 45% 45% 45% / 55% 45% 55% 45%;
}

.ears::before {
    top: 0.3em;
    left: 1.3em;
}

.ears::after {
    top: -1.1em;
    right: 5.8em;
}

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Use shadows to draw the outer ears:

.ears::before {
    color: #50a032;
    box-shadow: 
        0.4em 0.7em 0 -0.2em,
        -0.2em 0.7em 0 -0.1em,
        -0.6em 0.5em 0 -0.2em,
        -0.1em -0.2em 0 0.4em,
        -0.1em -0.2em 0 0.6em #2b4d13;
    transform: rotate(-40deg);
}

.ears::after {
    color: #5cb739;
    box-shadow: 
        0.3em 0.6em 0 -0.2em,
        -0.1em 0.6em 0 -0.1em,
        -0.6em 0.6em 0 -0.2em,
        -0.1em -0.2em 0 0.4em,
        -0.1em -0.2em 0 0.6em #2b4d13;
    transform: rotate(-6deg);
}

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Use pseudo elements to draw eyebrows:

.pig::before,
.pig::after {
    width: 1.4em;
    height: 1em;
    border-top: 0.5em solid #0f2d00;
    top: 2.3em;
    border-radius: 50% 50% 0 0 / 40% 40% 0 0;
}

.pig::before {
    left: 1.2em;
    transform: rotate(-20deg);
}

.pig::after {
    right: 1em;
    transform: rotate(25deg);
}

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Next set the shadows to increase the three-dimensional effect.
Add shadow effects to the head:

.pig {
    box-shadow: 
        inset -1.5em 1em 1.5em -0.5em rgba(255, 255, 255, 0.3),
        inset 0.5em -0.5em 0.8em 0.2em rgba(0, 0, 0, 0.2);
}

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Add shadow effects to the nose:

.nose {
    box-shadow: -0.1em 0.5em 0.2em 0.1em rgba(68, 132, 36, 0.6);
}

.nose::before,
.nose::after {
    box-shadow: inset -0.3em -0.2em 0.1em -0.1em #2d6b1f;
}

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Add shadow effects to the eyes:

.eyes::before,
.eyes::after {
    box-shadow: 
        inset 0.3em -0.6em 0.5em -0.2em rgba(0, 0, 0, 0.3),
        -0.1em 0.5em 0.2em 0.1em rgba(68, 132, 36, 0.6);
}

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