How to animate the Windows startup interface using pure CSS

This article brings you the content is about how to use the pure CSS to achieve the Windows Start interface animation effect, there is a certain reference value, the need for friends can refer to, I hope to help you.

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Source code Download

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

Code interpretation

Define the DOM, the container contains 2 elements, respectively, representing the logo and progress bar, the logo also contains 3 paragraphs of text:

<div class= "Windows-boot" >    <div class= "logo" >        <p class= "MS" >Microsoft</p>        <p class= "Win" >Windows</p>        <p class= "Pro" >Professional</p>    </div>    < Div class= "Bar" ></div></div>

Center display:

body {    margin:0;    HEIGHT:100VH;    Display:flex;    Align-items:center;    Justify-content:center;    Background-color:black;}

Define Container Dimensions:

. windows-boot {    width:21.5em;    Height:15em;}

To set paragraph styles:

. logo p {    color:white;    Font-family:sans-serif;    margin:0;    padding:0;}

Set Font Size:

. logo. ms {    font-size:1.6em;}. Logo. Win {    font-size:4.2em;}. Logo. Pro {    font-size:3em;}

To set the font weight:

. logo. ms {    font-weight:lighter;}. Logo. Win {    font-weight:bold;}. Logo. Pro {    font-weight:lighter;}

Set line height:

. logo. ms {    line-height:1em;}. Logo. Win {    line-height:86%;}. Logo. Pro {    line-height:1em;    Padding-left:0.2em;}

Add a trademark copyright symbol after "Microsoft":

. logo. ms::after {    content: ' \00a9 ';    font-size:0.625em;    Vertical-align:top;    position:relative;    Top: -0.3em;    Left:0.2em;}

Add "XP" after "Windows":

. logo. win::after {    content: ' XP ';    font-size:0.5em;    Vertical-align:top;    position:relative;    Top: -0.4em;    Color:tomato;}

To define a progress bar size:

. bar {    width:15em;    Height:1em;    Border:0.2em solid silver;}

Increase the spacing between the logo and the progress bar:

. windows-xp-loader {    Display:flex;    Flex-direction:column;    Justify-content:space-between;    Align-items:center;}

To set the style of a progress bar:

. bar {    border-radius:0.7em;    position:relative;    Padding:0.2em;}. Bar::before {    content: ';    Position:absolute;    Width:3em;    height:70%;    Background-color:dodgerblue;    Border-radius:0.2em;}

Sets the style of the blue color block in the progress bar with a linear gradient:

. bar::before {    background:         linear-gradient (to right            ,            transparent 30%,            black 30%, Black 35%,            transparent 35%, transparent 65%,            black 65%, black 70%,            transparent 70%        ),        linear-gradient (            Blue 0,            royalblue 17%,            deepskyblue 32%, Deepskyblue 45%,            royalblue 60%,            blue 100%        ); C25/>filter:brightness (1.2);}

Add animation effects:

. bar::before {    animation:run 2s linear infinite;} @keyframes Run {from    {        Transform:translatex ( -3em);    }    to {        Transform:translatex (15em);    }}

Finally, hide the content outside the progress bar:

. bar {    Overflow:hidden;}

Done!