Question

我有一个我在网站上使用的播放器我想改变播放按钮的外观。

我想用虚线边框做这个，然后增加破折号之间的空间。那没用。

我无法使用图片。是否有CSS(3)解决方案？

我希望它看起来像这样。

这真的是关于角落！

-------------更新----------------

所以我使用了@Naila的解决方案来使它工作。针对以下问题运行：

我为Video.js使用WordPress插件，我正在创建一个新皮肤

当我跟踪css时，我发现已经有::before - 伪处理播放箭头。

箭头的::before - 伪表示宽度为100％，这有助于箭头位于中心。因为我使用30％的宽度使边框成为一个角落。这会覆盖100％的早期宽度。导致以下结果：

以下是：
CodePen

如果您刚刚在CSS字段中浏览此CSS，您将获得我现在所处的位置并查看问题：

/*
Player Skin Designer for Video.js
http://videojs.com

To customize the player skin edit 
the CSS below. Click "details" 
below to add comments or questions.
This file uses some SCSS. Learn more  
at http://sass-lang.com/guide)

This designer can be linked to at:
http://codepen.io/heff/pen/EarCt/left/?editors=010
*/

// The following are SCSS variables to automate some of the values.
// But don't feel limited by them. Change/replace whatever you want. 

// The color of icons, text, and the big play button border.
// Try changing to #0f0
$primary-foreground-color: #fff; // #fff default
// The default color of control backgrounds is mostly black but with a little
// bit of blue so it can still be seen on all-black video frames, which are c ommon.
// Try changing to #900
$primary-background-color: #2B333F;  // #2B333F default

// Try changing to true
$center-big-play-button: true; // true default

.video-js {
 /* The base font size controls the size of everything, not just text.
 All dimensions use em-based sizes so that the scale along with the font size.
 Try increasing it to 15px and see what happens. */
 font-size: 10px;

 /* The main font color changes the ICON COLORS as well as the text */
 color: $primary-foreground-color;
}

/* The "Big Play Button" is the play button that shows before the video plays.
To center it set the align values to center and middle. The typical location
of the button is the center, but there is trend towards moving it to a corner
where it gets out of the way of valuable content in the poster image.*/
.vjs-default-skin .vjs-big-play-button {
  /* The font size is what makes the big play button...big. 
 All width/height values use ems, which are a multiple of the font size.
 If the .video-js font-size is 10px, then 3em equals 30px.*/
 font-size: 3em;

 /* We're using SCSS vars here because the values are used in multiple places.
 Now that font size is set, the following em values will be a multiple of the
 new font size. If the font-size is 3em (30px), then setting any of
 the following values to 3em would equal 30px. 3 * font-size. */
 $big-play-width: 3em; 
  /* 1.5em = 45px default */
  $big-play-height: 3em;

 line-height: $big-play-height;
 height: $big-play-height;
 width: $big-play-width;

 /* 0.06666em = 2px default */
 /* 0.3em = 9px default */
 border:none;
 border-radius:0;

 @if $center-big-play-button {
 /* Align center */
left: 50%;
top: 50%;
margin-left: -($big-play-width / 2);
margin-top: -($big-play-height / 2);   
} @else {
/* Align top left. 0.5em = 15px default */
left: 0.5em;
top: 0.5em;
}
}
.vjs-big-play-button:before {
 position: absolute;
content: "";
width: 30px !important;
height: 30px!important;
right: -2px;
bottom: -2px;
 border-left: 2px solid $primary-foreground-color;
border-top: 2px solid $primary-foreground-color;
}
.vjs-big-play-button:after {
 position: absolute;
 content: "";
 width: 30px;
 height: 30px;
 right: -2px;
 bottom: -2px;
 border-right: 2px solid $primary-foreground-color;
 border-bottom: 2px solid $primary-foreground-color;
}

/* The default color of control backgrounds is mostly black but with a little
  bit of blue so it can still be seen on all-black video frames, which are     common. */
.video-js .vjs-control-bar,
.video-js .vjs-big-play-button,
.video-js .vjs-menu-button .vjs-menu-content {
  /* IE8 - has no alpha support */
  background-color: $primary-background-color;
  /* Opacity: 1.0 = 100%, 0.0 = 0% */
  background-color: rgba($primary-background-color, 0.7);
}

// Make a slightly lighter version of the main background
// for the slider background.
$slider-bg-color: lighten($primary-background-color, 33%);

/* Slider - used for Volume bar and Progress bar */
.video-js .vjs-slider {
 background-color: $slider-bg-color;
 background-color: rgba($slider-bg-color, 0.5);
}

/* The slider bar color is used for the progress bar and the volume bar
(the first two can be removed after a fix that's coming) */
.video-js .vjs-volume-level,
.video-js .vjs-play-progress,
.video-js .vjs-slider-bar {
background: $primary-foreground-color;
}

/* The main progress bar also has a bar that shows how much has been loaded.     */
.video-js .vjs-load-progress {
  /* For IE8 we'll lighten the color */
  background: lighten($slider-bg-color, 25%);
  /* Otherwise we'll rely on stacked opacities */
  background: rgba($slider-bg-color, 0.5);
}

/* The load progress bar also has internal divs that represent
 smaller disconnected loaded time ranges */
.video-js .vjs-load-progress div {
  /* For IE8 we'll lighten the color */
  background: lighten($slider-bg-color, 50%);
  /* Otherwise we'll rely on stacked opacities */
  background: rgba($slider-bg-color, 0.75);
}

Answer 1

我们可以使用pseudo元素执行此操作，查看演示

＆＃13;

.box {
  width: 200px;
  height: 200px;
  margin: 15px auto;
  background: #999;
  position: relative;
}
.box:before {
  position: absolute;
  content: "";
  width: 30px;
  height: 30px;
  top: -2px;
  left: -2px;
  z-index:-1;
  border-left: 2px solid red;
  border-top: 2px solid red;
}
.box:after {
  position: absolute;
  content: "";
  width: 30px;
  height: 30px;
  right: -2px;
  bottom: -2px;
  z-index:-1;
  border-right: 2px solid red;
  border-bottom: 2px solid red;
}

＆＃13;

<div class="box"></div>

＆＃13;

Answer 2

您可以使用一个元素并使用伪元素创建边框，对于箭头，您可以使用special-char。您也可以使用Flexbox进行对齐。

＆＃13;

body {
  background: #000000;
}
.button {
  margin: 50px;
  width: 100px;
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #1E232C;
  color: white;
  font-size: 20px;
  position: relative;
}
.button:before,
.button:after {
  width: 30px;
  height: 30px;
  content: '';
  position: absolute;
}
.button:before {
  border-top: 1px solid white;
  border-left: 1px solid white;
  top: 0;
  left: 0;
}
.button:after {
  border-right: 1px solid white;
  border-bottom: 1px solid white;
  bottom: 0;
  right: 0;
}

＆＃13;

<div class="button">►</div>

＆＃13;

Answer 3

为什么不使用api_secret_key=target/test-classes//abc-dev.pem？

而不是为角落使用伪元素

box-shadow

html,body{
  background: black;
  height: 100%;
}
.player{
  background: #333;
  box-shadow: 16px 16px 0 -15px white, -16px -16px 0 -15px white;
  display: block;
  height: 50px;
  margin: 50px auto;
  position: relative;
  width: 50px;
}
.player::before{
  border-color: transparent transparent transparent white;
  border-style: solid;
  border-width: 10px;
  content: "";
  display: block;
  left: 20px;
  position: absolute;
  top: 15px;
}

Answer 4

自回答以来，这里有一些方法（包括悬停效果和半径的测试）没有伪和CSS（3）：

（使用影子和渐变，就像我前一天评论的那样）。

SVG不参与，不是必需的，但也可以完成这项任务。

div:nth-child(1),div:nth-child(6),div:nth-child(11) {
  box-shadow: 
    -70px -70px 0 -67px red, 
     70px  70px 0 -67px red;
}
div:nth-child(1):hover,div:nth-child(6):hover,div:nth-child(11):hover {
  box-shadow: 
    -70px -70px 0 -67px red, 
     70px  70px 0 -67px red, 
      0     0   0  3px gold;
}

div:nth-child(2),div:nth-child(7),div:nth-child(12) {
  background: 
    linear-gradient(#333, #333) no-repeat center, 
    linear-gradient(to bottom right, red 20%, transparent 20%, transparent 80%, red 80%) no-repeat center ;
  background-size: 
    auto auto, 
    200px 200px;
}
div:nth-child(2):hover, div:nth-child(7):hover,div:nth-child(12):hover {
  background: 
    linear-gradient(#333, #333) no-repeat center, 
    linear-gradient(to bottom right, red 20%, transparent 20%, transparent 80%, red 80%) no-repeat center,
    white;
  background-size: 
    auto auto, 
    200px 200px;
}
div:nth-child(3),div:nth-child(8),div:nth-child(13) {
  border:none;
  padding:3px;
  background:
    linear-gradient(red,red) no-repeat top left,
    linear-gradient(red,red) no-repeat top left,
    linear-gradient(red,red) no-repeat bottom right,
    linear-gradient(red,red) no-repeat bottom right,
    linear-gradient(#333,#333) center no-repeat ;
  background-size: 
    40% 3px, 
    3px 40%,
    40% 3px, 
    3px 40%, 
    auto auto;
  background-clip:
    border-box,
    border-box,
    border-box,
    border-box,
    content-box;
    
}
div:nth-child(3):hover, div:nth-child(8):hover,div:nth-child(13):hover {
  border:none;
  padding:3px;
  background:
    linear-gradient(red,red) no-repeat top left,
    linear-gradient(red,red) no-repeat top left,
    linear-gradient(red,red) no-repeat bottom right,
    linear-gradient(red,red) no-repeat bottom right,
    linear-gradient(#333,#333) center no-repeat, 
    green ;
  background-size: 
    40% 3px, 
    3px 40%,
    40% 3px, 
    3px 40%, 
    auto auto;
  background-clip:
    border-box,
    border-box,
    border-box,
    border-box,
    content-box;
    
}

div {
  width: 200px;
  height:200px;
  margin: 10px;
  background: #333;
  border: solid transparent;
  box-sizing: border-box;
  display:inline-flex;
  vertical-align:middle;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  text-align:center;
  color:white;
}
hr~div {
  border-radius:5px;
}
hr~hr~div {
  border-radius:25px;
}
html {
  background:gray;
  text-align:center
}

<div>red broken borders drawn via <code>shadow</code>
</div>
<div>red broken borders drawn via <code>linear&shy;-gradient</code> 
</div>
<div>red broken borders drawn via multiple <code>linear&shy;-gradient</code> & <code>background&shy;-clip, background&shy;-size, background&shy;-position</code> 
</div>
<hr/>
<p>Can a small <code>border-radius</code> be applied ?</p>
<div>red broken borders drawn via <code>shadow</code>
</div>
<div>red broken borders drawn via <code>linear&shy;-gradient</code> 
</div>
<div>red broken borders drawn via multiple <code>linear&shy;-gradient</code> & <code>background&shy;-clip, background&shy;-size, background&shy;-position</code> 
</div>
<hr/>
<p>Can a big <code>border-radius</code> be applied ?</p>
<div>red broken borders drawn via <code>shadow</code>
</div>
<div>red broken borders drawn via <code>linear&shy;-gradient</code> 
</div>
<div>red broken borders drawn via multiple <code>linear&shy;-gradient</code> & <code>background&shy;-clip, background&shy;-size, background&shy;-position</code> 
</div>

如果您确实需要修复更大的半径，请在第三个示例中重新排序bg-gradient和background-size。查看codepen中的第10个div来玩;）

Answer 5

我会像这样写这个按钮，请根据你的设计改写你的单位：

    .play-icon {position:relative;}
    .play-icon:before {content: '';position:absolute;left:-1px;top:-1px; 
width:10px; height:10px; border-left:1px solid #fff; border-top:1px solid #fff; 
display:inline-block; }
    .play-icon:after {content: '';position:absolute;right:-1px;bottom:-1px; 
width:10px; height:10px; border-right:1px solid #fff; 
border-bottom:1px solid #fff; display:inline-block; }

Answer 6

使用:before和:after的组合，您可以获得所需的效果。

我们的想法是使用:before和:after伪元素在元素中创建2个较小的正方形，并分别在它们的顶部/左侧和底部/右侧赋予它们白色边框。 / p>

由于您的设计要求白色边框在按钮外部偏移，我们将使用负定位。

＆＃13;

html,
body {
  height: 100%;
  width: 100%;
  background-color: #000000;
}

.container {
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

.btnPlay {
  position: relative;
  color: #ffffff;
  font-size: 20px;
  width: 100px;
  height: 100px;
  line-height: 100px;
  text-align: center;
  background-color: #222222;
  transition: background 0.1s ease-out;
}

.btnPlay:before,
.btnPlay:after {
  content: "";
  position: absolute;
  display: block;
  width: 25px;
  height: 25px;
}

.btnPlay:before {
  top: -1px;
  left: -1px;
  border-left: 1px solid #ffffff;
  border-top: 1px solid #ffffff;
}

.btnPlay:after {
  bottom: -1px;
  right: -1px;
  border-right: 1px solid #ffffff;
  border-bottom: 1px solid #ffffff;
}

.btnPlay:hover {
  cursor: pointer;
  background-color: #292929;
}

＆＃13;

<div class="container">
  <div class="btnPlay">
    &#9658;
  </div>
</div>

＆＃13;

Answer 7

如果伪包不是你的包：

＆＃13;

body { background: #555; }

.parent, .main { position: relative; height: 100px; width: 100px; }
.main { background-color: navy; z-index: 2; }
.sub { position: absolute; background-color: white; height: 30px; width: 30px; z-index: 1; }
.sub.tl { top:-1px; left:-1px; }
.sub.br { bottom:-1px; right:-1px; }

＆＃13;

<div class="parent">
  <div class="main"></div>
  <div class="sub tl"></div>
  <div class="sub br"></div>
</div>

＆＃13;

Answer 8

这可以通过 CSS pseudo elements. 的使用来实现。您只需要创建两个白框并将它们放在父元素下面，仅使用伪元素使用负z-index，因为如果你将z-index设置为父级，那么伪元素将不知道如何处理他们的z-index，因为父级z-index的权重更大。

这是一个有效的 Fiddle.

<div class="container">
  <div class="play-box"></div>
</div>

body {
  background: black;
}

.play-box {
  margin: 5rem;
  width: 200px;
  height: 200px;
  background: #2f2f2f;
  position: relative;
}

.play-box::before,
.play-box::after {
  position: absolute;
  content: '';
  background: #fff;
  width: 50px;
  height: 50px;
  z-index: -1;
}

.play-box::before {
  left: -1px;
  top: -1px;
}

.play-box::after {
  right: -1px;
  bottom: -1px;
}

带边框的方形div。仅显示角落

8 个答案: