۸ ترفند مفید CSS که باید بدانید — راهنمای کاربردی

1<div id="document">
2  <main>
3    <h1>Everything apart from the footer goes here</h1>
4    <p>Add more text here, to see how the footer responds!</p>
5  </main>
6  <footer>
7    <h1>The footer goes here</h1>
8  </footer>
9</div>

1#document { 
2    height: 100vh;
3    display: flex;
4    flex-direction: column;
5}
6
7main {
8  flex: auto;
9}
10
11footer {
12    flex-shrink: 0;
13}
14
15/* Other styling elements, that are not necessary for the example */
16
17* {
18  margin: 0;
19  font-family: Candara;
20}
21
22h1, p {
23  padding: 20px;
24}
25
26footer {
27  color: white;
28  background: url(https://images.unsplash.com/photo-1550795598-717619d32900?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=676&q=80);
29  background-position: center; 
30  background-repeat: no-repeat;
31  background-size: cover;
32}
33
34footer > h1 {
35  text-shadow: 1px 1px 4px #00000080;
36}

1<div class="img-wrapper">
2    <img class="inner-img" src="https://source.unsplash.com/random/400x400" />
3</div>
4
5<!-- Additional examples -->
6
7<div class="img-wrapper">
8    <img class="inner-img" src="https://source.unsplash.com/random/401x401" width="400px" height="400px" />
9</div>
10
11<div class="img-wrapper">
12    <img class="inner-img" src="https://source.unsplash.com/random/402x402" width="400px" height="400px" />
13</div>

1.img-wrapper {  
2  width: 400px;
3  height: 400px;
4  overflow: hidden; 
5}
6
7.inner-img {
8  transition: 0.3s;
9}
10
11.inner-img:hover {
12  transform: scale(1.1);
13}
14
15/* Other styling elements, that are not necessary for the example */
16
17.img-wrapper {
18  display: inline-block;
19  box-sizing: border-box;
20  //border: 1px solid #000;
21}

1body {
2    background: #FFF;
3    filter: invert(1) hue-rotate(210deg);
4}

1<h1>Checklist</h1>
2
3<ul class="complete">
4  <li>Item 1</li>
5  <li>Item 2</li>
6  <li>Item 3</li>
7</ul>
8  
9<ul class="incomplete">
10  <li>Item 4</li>
11  <li>Item 5</li>
12  <li>Item 6</li>
13</ul>

1ul {
2  list-style: none;
3}
4
5ul.complete li::before {
6  content: '? ';
7}
8
9ul.incomplete li::before {
10  content: '☐ ';
11}
12
13/* Other styling elements, that are not necessary for the example */
14
15* {
16  font-family: Candara;
17}
18
19h1 {
20  margin: 2rem 2.5rem;
21  font-size: 3rem;
22}
23
24ul {
25  font-size: 1.7rem;
26  margin: 0 auto;
27}

1<div class="breadcrumb">
2  <a>Home</a>
3  <a>Shop</a>
4  <a>T-Shirts</a>
5</div>

1.breadcrumb a:first-child::before {
2    content: " » ";
3}
4.breadcrumb a::after {
5    content: " /";
6}
7.breadcrumb a:last-child::after {
8    content: "";
9}
10
11/* Other styling elements, that are not necessary for the example */
12
13* {
14  text-align: center;
15  font-family: Candara;
16  font-size: 1.3rem;
17}

1<div class="wrapper">
2  <h1>Scroll Down</h1>  
3  <div class="parallax-img"></div>
4  <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</p>
5  <p>Sed ut perspiciatis unde omnis iste natus error sit voluptatem accusantium doloremque laudantium, totam rem aperiam, eaque ipsa quae ab illo inventore veritatis et quasi architecto beatae vitae dicta sunt explicabo. Nemo enim ipsam voluptatem quia voluptas sit aspernatur aut odit aut fugit, sed quia consequuntur magni dolores eos qui ratione voluptatem sequi nesciunt. Neque porro quisquam est, qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit, sed quia non numquam eius modi tempora incidunt ut labore et dolore magnam aliquam quaerat voluptatem. Ut enim ad minima veniam, quis nostrum exercitationem ullam corporis suscipit laboriosam, nisi ut aliquid ex ea commodi consequatur? Quis autem vel eum iure reprehenderit qui in ea voluptate velit esse quam nihil molestiae consequatur, vel illum qui dolorem eum fugiat quo voluptas nulla pariatur?</p>
6  <p>At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Temporibus autem quibusdam et aut officiis debitis aut rerum necessitatibus saepe eveniet ut et voluptates repudiandae sint et molestiae non recusandae. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.</p>
7</div>
8
9<div class="wrapper">
10</div>

1.wrapper {
2  height: 100vh;
3}
4
5.parallax-img {
6  height: 100%;
7  background-attachment: fixed;
8  background-position: center;
9  background-repeat: no-repeat;
10  background-size: cover;
11}
12
13/* Other styling elements, that are not necessary for the example */
14
15* {
16  font-family: Candara;
17}
18
19p {
20  font-size: 1.1rem;
21}
22
23.parallax-img {
24  background-image: url('https://source.unsplash.com/random/1920x1080');
25}

1<div class="block">
2  <img src="https://unsplash.it/1920/1920/?image=1005" data-speed="-1" class="img-parallax">
3  <h2>Parallax Speed -1</h2>
4</div>
5<div class="block">
6  <img src="https://unsplash.it/1920/1920/?image=1067" data-speed="1" class="img-parallax">
7  <h2>Parallax Speed 1</h2>
8</div>
9<div class="block">
10  <img src="https://unsplash.it/1920/1920/?gravity=center" data-speed="-0.25" class="img-parallax">
11  <h2>Parallax Speed -0.25</h2>
12</div>
13<div class="block">
14  <img src="https://unsplash.it/1920/1920/?image=1080" data-speed="0.25" class="img-parallax">
15  <h2>Parallax Speed 0.25</h2>
16</div>
17<div class="block">
18  <img src="https://unsplash.it/1920/1920/?random" data-speed="-0.75" class="img-parallax">
19  <h2>Parallax Speed -0.75</h2>
20</div>
21<div class="block">
22  <img src="https://unsplash.it/1920/1920/?blur" data-speed="0.75" class="img-parallax">
23  <h2>Parallax Speed 0.75</h2>
24</div>

1@import url(https://fonts.googleapis.com/css?family=Amatic+SC:400,700);
2html, body{
3  margin: 0;
4  padding: 0;
5  height: 100%;
6  width: 100%;
7  font-family: 'Amatic SC', cursive;
8}
9.block{
10  width: 100%;
11  height: 100%;
12  position: relative;
13  overflow: hidden;
14  font-size: 16px;
15}
16.block h2{
17  position: relative;
18  display: block;
19  text-align: center;
20  margin: 0;
21  top: 50%;
22  transform: translateY(-50%);
23  font-size: 10vw;
24  color: white;
25  font-weight: 400;
26}
27.img-parallax {
28  width: 100vmax;
29  z-index: -1;
30  position: absolute;
31  top: 0;
32  left: 50%;
33  transform: translate(-50%,0);
34  pointer-events: none
35}

1// I know that the code could be better.
2// If you have some tips or improvement, please let me know.
3
4$('.img-parallax').each(function(){
5  var img = $(this);
6  var imgParent = $(this).parent();
7  function parallaxImg () {
8    var speed = img.data('speed');
9    var imgY = imgParent.offset().top;
10    var winY = $(this).scrollTop();
11    var winH = $(this).height();
12    var parentH = imgParent.innerHeight();
13
14
15    // The next pixel to show on screen      
16    var winBottom = winY + winH;
17
18    // If block is shown on screen
19    if (winBottom > imgY && winY < imgY + parentH) {
20      // Number of pixels shown after block appear
21      var imgBottom = ((winBottom - imgY) * speed);
22      // Max number of pixels until block disappear
23      var imgTop = winH + parentH;
24      // Porcentage between start showing until disappearing
25      var imgPercent = ((imgBottom / imgTop) * 100) + (50 - (speed * 50));
26    }
27    img.css({
28      top: imgPercent + '%',
29      transform: 'translate(-50%, -' + imgPercent + '%)'
30    });
31  }
32  $(document).on({
33    scroll: function () {
34      parallaxImg();
35    }, ready: function () {
36      parallaxImg();
37    }
38  });
39});

1<input type="checkbox" />
2<br />
3<img src="https://source.unsplash.com/random/1920x1080" alt="Random" />

1input {
2  transform: scale(1.5);
3  margin: 10px 5px;
4}
5
6img {
7  width: 1920px;
8  height: 1080px;
9  transition: 0s;
10}
11
12input:checked + br + img {
13  width: 500px;
14  height: 500px;
15  object-fit: cover;
16  object-position: left-top;
17  transition: width 2s, height 4s;
18}

1<h1>This is an example title</h1>

1 h1 {
2    mix-blend-mode: color-dodge;
3    font-family: Candara;
4    font-size: 5rem;
5    text-align: center;
6    margin: 0; 
7    padding: 20vh 200px;
8    color: lightsalmon;
9  }
10
11  html,
12  body {
13    margin: 0;
14    background-color: white;
15  }
16
17  body {
18
19    background-image: url(https://images.unsplash.com/photo-1550589348-67046352c5f3?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=1353&q=80);
20    background-repeat: no-repeat;
21    background-size: cover;
22    min-height: 100vh;
23    overflow: hidden;
24  }

1<div id="columns">
2  <figure>
3  <img src="//s3-us-west-2.amazonaws.com/s.cdpn.io/4273/cinderella.jpg">
4    <figcaption>Cinderella wearing European fashion of the mid-1860’s</figcaption>
5    </figure>
6    
7    <figure>
8    <img src="//s3-us-west-2.amazonaws.com/s.cdpn.io/4273/rapunzel.jpg">
9    <figcaption>Rapunzel, clothed in 1820’s period fashion</figcaption>
10    </figure>
11    
12  <figure>
13    <img src="//s3-us-west-2.amazonaws.com/s.cdpn.io/4273/belle.jpg">
14    <figcaption>Belle, based on 1770’s French court fashion</figcaption>
15    </figure>
16  
17    <figure>
18    <img src="//s3-us-west-2.amazonaws.com/s.cdpn.io/4273/mulan_2.jpg">
19    <figcaption>Mulan, based on the Ming Dynasty period</figcaption>
20    </figure>
21    
22   <figure>
23     <img src="//s3-us-west-2.amazonaws.com/s.cdpn.io/4273/sleeping-beauty.jpg">
24    <figcaption>Sleeping Beauty, based on European fashions in 1485</figcaption>
25    </figure>
26    
27   <figure>
28     <img src="//s3-us-west-2.amazonaws.com/s.cdpn.io/4273/pocahontas_2.jpg">
29    <figcaption>Pocahontas based on 17th century Powhatan costume</figcaption>
30    </figure>
31  
32    <figure>
33    <img src="//s3-us-west-2.amazonaws.com/s.cdpn.io/4273/snow-white.jpg">
34    <figcaption>Snow White, based on 16th century German fashion</figcaption>
35    </figure>   
36  
37   <figure>
38    <img src="//s3-us-west-2.amazonaws.com/s.cdpn.io/4273/ariel.jpg">
39    <figcaption>Ariel wearing an evening gown of the 1890’s</figcaption>
40    </figure>
41  
42    <figure>
43    <img src="//s3-us-west-2.amazonaws.com/s.cdpn.io/4273/tiana.jpg">
44    <figcaption>Tiana wearing the <i>robe de style</i> of the 1920’s</figcaption>
45    </figure>   
46  <small>Art © <a href="//clairehummel.com">Claire Hummel</a></small>
47    </div>

1@font-face{font-family:'Calluna';
2 src:url('https://s3-us-west-2.amazonaws.com/s.cdpn.io/4273/callunasansregular-webfont.woff') format('woff');
3}
4body {
5    background: url(//subtlepatterns.com/patterns/scribble_light.png);
6  font-family: Calluna, Arial, sans-serif;
7  min-height: 1000px;
8}
9#columns {
10    column-width: 320px;
11    column-gap: 15px;
12  width: 90%;
13    max-width: 1100px;
14    margin: 50px auto;
15}
16
17div#columns figure {
18    background: #fefefe;
19    border: 2px solid #fcfcfc;
20    box-shadow: 0 1px 2px rgba(34, 25, 25, 0.4);
21    margin: 0 2px 15px;
22    padding: 15px;
23    padding-bottom: 10px;
24    transition: opacity .4s ease-in-out;
25  display: inline-block;
26  column-break-inside: avoid;
27}
28
29div#columns figure img {
30    width: 100%; height: auto;
31    border-bottom: 1px solid #ccc;
32    padding-bottom: 15px;
33    margin-bottom: 5px;
34}
35
36div#columns figure figcaption {
37  font-size: .9rem;
38    color: #444;
39  line-height: 1.5;
40}
41
42div#columns small { 
43  font-size: 1rem;
44  float: right; 
45  text-transform: uppercase;
46  color: #aaa;
47} 
48
49div#columns small a { 
50  color: #666; 
51  text-decoration: none; 
52  transition: .4s color;
53}
54
55div#columns:hover figure:not(:hover) {
56    opacity: 0.4;
57}
58
59@media screen and (max-width: 750px) { 
60  #columns { column-gap: 0px; }
61  #columns figure { width: 100%; }
62}