纯CSS3绘制苹果电脑键盘样式代码

简要教程

一款CSS3绘制苹果键盘、漂亮立体的电脑键盘样式代码。

使用方法

在页面引入CSS样式

*, *:before, *:after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
:root {
    font-size: 16px;
}
body, button {
    font: 1em -apple-system, BlinkMacSystemFont,"Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
}
button {
    background-color: #eee;
    border: 0;
    border-radius: 0.125em;
    box-shadow:
        -0.2em -0.125em 0.125em rgba(0, 0, 0, 0.25), 
        0 0 0 0.04em rgba(0, 0, 0, 0.3), 
        0.02em 0.02em 0.02em rgba(0, 0, 0, 0.4) inset, 
        -0.05em -0.05em 0.02em rgba(255, 255, 255, 0.8) inset;
    color: #777;
    font-size: 1em;
    outline: 0;
    position: relative;
    vertical-align: top;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    -webkit-tap-highlight-color: transparent;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}
button:not(:last-of-type) {
    margin-right: 0.35em;
}
button:active {
    box-shadow:
        0.1em 0.1em 0.1em rgba(0, 0, 0, 0.2),
        0 0 0 0.05em rgba(0, 0, 0, 0.4), 
        -0.025em -0.05em 0.025em rgba(255, 255, 255, 0.8) inset;
}
button span {
    display: inline-block;
}
button > span {
    margin: auto;
    padding: 0.2em 0.375em;
    position: absolute;
    top: 50%;
    left: 0;
    font-size: 0.5em;
    line-height: 2;
    transform: translateY(-50%) scaleX(0.875);
    width: 100%;
}
 
/* Keyboard */
.keyboard {
    background-image: linear-gradient(90deg, #888, #ccc);
    border-radius: 0.5em;
    box-shadow: -1em -1em 1.5em rgba(0, 0, 0, 0.6), 0 0 0 1px #aaa inset;
    display: grid;
    grid-template-columns: 21.25em 4.125em 5.65em;
    grid-template-rows: 0.75em 1.125em 1.125em 1.125em 1.125em 1.375em;
    grid-gap: 0.375em 0.875em;
    font-size: 36px;
    margin: 3em auto 0 auto;
    padding: 0.25em;
    width: 33.25em;
    height: 9em;
}
.row:nth-of-type(14) {
    text-align: center;
}
.row:nth-of-type(n + 14):nth-of-type(-3n + 17) {
    transform: translateY(0.25em);
}
.bump {
    border-radius: 0.1em;
    box-shadow: -0.05em -0.02em 0 0.05em rgba(0, 0, 0, 0.3);
    padding: 0;
    top: 85%;
    left: calc(50% - 0.4em);
    width: 0.8em;
    height: 0.15em;
}
 
/* Button size */
.btn0 {
    width: 1.19em;
    height: 0.75em;
}
.btn1 {
    width: 1.125em;
    height: 0.75em;
}
.btn2 {
    width: 1.125em;
    height: 1.125em;
}
.btn3 {
    width: 2em;
    height: 1.125em;
}
.btn4 {
    width: 2.3em;
    height: 1.125em;
}
.btn5 {
    width: 3.05em;
    height: 1.125em;
}
.btn6 {
    width: 1.5625em;
    height: 1.375em;
}
.btn7 {
    width: 1.8375em;
    height: 1.375em;
}
.btn8 {
    width: 1.125em;
    height: 1.375em;
}
.btn9 {
    width: 2.6875em;
    height: 1.375em;
}
.btn10 {
    width: 1.125em;
    height: 2.875em;
}
.btn-longest {
    width: 8.625em;
    height: 1.375em;
}
 
/* Button text alignment */
.ul, .ll, .ur, .lr {
    top: 0;
    transform: scaleX(0.875);
}
.ul, .ll {
    text-align: left;
    transform-origin: 0 50%;
}
.ur, .lr {
    text-align: right;
    transform-origin: 100% 50%;
}
.ll, .lr {
    top: auto;
    bottom: 0;
}
.noxscale {
    transform: translateY(-50%) scaleX(1);
}
.ll.noxscale, .lr.noxscale {
    transform: scaleX(1);
}
 
/* Button font size */
.xxxs {
    font-size: 0.2em;
    line-height: 1.5;
}
.xxs {
    font-size: 0.25em;
    line-height: 1.5;
}
.xs {
    font-size: 0.3em;
    line-height: 1.125;
}
.sm {
    font-size: 0.4em;
    line-height: 1.25;
}
 
/* Icons */
.up, .right, .down, .left {
    width: 0;
    height: 0;
    vertical-align: 0.1em;
}
.up {
    border-left: 0.25em solid transparent;
    border-right: 0.25em solid transparent;
    border-bottom: 0.5em solid currentColor;
}
.right {
    border-left: 0.5em solid currentColor;
    border-top: 0.25em solid transparent;
    border-bottom: 0.25em solid transparent;
}
.down {
    border-left: 0.25em solid transparent;
    border-right: 0.25em solid transparent;
    border-top: 0.5em solid currentColor;
}
.left {
    border-right: 0.5em solid currentColor;
    border-top: 0.25em solid transparent;
    border-bottom: 0.25em solid transparent;
}
.pause {
    border-left: 0.2em solid;
    border-right: 0.2em solid;
    vertical-align: 0.1em;
    width: 0.475em;
    height: 0.5em;
}
.emoji {
    filter: saturate(0);
    -webkit-filter: saturate(0);
}
.cascade:before, .cascade:after, .block {
    border: 1px solid;
}
.cascade {
    position: relative;
    height: 1em;
    width: 1.2em;
}
.cascade:before, .cascade:after {
    content: "";
    position: absolute;
    height: 0.45em;
    width: 0.8em;
}
.cascade:before {
    top: 0;
    left: 0;
}
.cascade:after {
    right: 0;
    bottom: 0;
}
.block {
    margin-left: 0.1em;
    height: 0.8em;
    width: 0.6em;
    vertical-align: 0.1em;
}
.apps:before, .apps:after {
    font-weight: bold;
    display: block;
    content: "\25A1\25A1\25A1";
    line-height: 0.875;
}
 
/* Miscellaneous */
.on {
  color: #8dff00;
  text-shadow: 0 0 2px #478800;
}
.noxpad {
    padding: 0.2em 0;
}
 
/* IE 11 fix */
@media all and (-ms-high-contrast: none), (-ms-high-contrast: active) {
  .keyboard {
        display: -ms-grid;
        -ms-grid-columns: 22.125em 5em 5.75em;
        -ms-grid-rows: 1.125em 1.5em 1.5em 1.5em 1.5em 1.375em;
    }
    .row:nth-child(3n + 2) {
        -ms-grid-column: 2;
    }
    .row:nth-child(3n + 3) {
        -ms-grid-column: 3;
    }
    .row:nth-child(n + 4):nth-child(-n + 6) {
        -ms-grid-row: 2;
    }
    .row:nth-child(n + 7):nth-child(-n + 9) {
        -ms-grid-row: 3;
    }
    .row:nth-child(n + 10):nth-child(-n + 12) {
        -ms-grid-row: 4;
    }
    .row:nth-child(n + 13):nth-child(-n + 15) {
        -ms-grid-row: 5;
    }
    .row:nth-child(n + 16) {
        -ms-grid-row: 6;
    }
    .row:nth-of-type(14) button {
        transform: translateX(-0.5em);
    }