在div之间Chrome中的1px白色间距

Question

JSFiddle：http://jsfiddle.net/lustre/c6cwbjLz/13/

基本上，我一直在尝试制作一个全屏3x2网格，并且基本上已经实现了它，但是当我将鼠标悬停在第二列和第三列之间时，我看到第二列和第三列之间有一条微小的1px垂直线。网格项目。这是从哪里来的，我该怎样摆脱它？

我在其他地方读过，包含-webkit-backface-visibility: hidden;在使用3D转换时可以提供帮助;但是我没有使用任何3D转换。这条线在一定程度上起作用，因为它隐藏了某些尺寸的白线，但在其他尺寸上它仍然出现（我假设它不能被3整除？）。我在下面的JSFiddle中评论了这一行，因此您可以轻松地看到悬停时出现的白线。

以下是我看到的内容的屏幕截图，以防万一没有发生。虽然到目前为止我只在Chrome中遇到过这个问题。

JSFiddle：http://jsfiddle.net/lustre/c6cwbjLz/13/

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jQuery(document).ready(function () {
    gridSize();
});

jQuery(window).resize(function () {
    gridSize();
});

/* Returns scrollbar width*/
function getScrollBarWidth() {
    var inner = document.createElement('p');
    inner.style.width = "100%";
    inner.style.height = "200px";

    var outer = document.createElement('div');
    outer.style.position = "absolute";
    outer.style.top = "0px";
    outer.style.left = "0px";
    outer.style.visibility = "hidden";
    outer.style.width = "200px";
    outer.style.height = "150px";
    outer.style.overflow = "hidden";
    outer.appendChild(inner);

    document.body.appendChild(outer);
    var w1 = inner.offsetWidth;
    outer.style.overflow = 'scroll';
    var w2 = inner.offsetWidth;
    if (w1 == w2) w2 = outer.clientWidth;

    document.body.removeChild(outer);

    return (w1 - w2);
};

function gridSize() {
    
    if ($('.box').width() > 0) {
        var w = $(window).width();    
    } else {
        var w = $(window).width() - getScrollBarWidth();
    }

    var h = $(window).height();

    var thirdw, halfw, halfh, overboxw, overboxh;
    
    /* Width needs to be 33%, height needs to be 50% */
    /* Full screen sizes */
    thirdw = w / 3;
    halfh = h / 2;

    $('.box').css({
        "width": thirdw,
            "height": halfh
    });

    /* Set overbox size */

    overboxw = thirdw - 60;
    overboxh = halfh - 60;

    $('.box .overbox').css({
        "width": overboxw,
            "height": overboxh
    });

    /* Resize the images based on the ratio */
    if (thirdw > halfh) {
        jQuery('.box img').css({
            "height": halfh +"px",
			"width": "auto"
        });
    } else {
        jQuery('.box img').css({
            //"height": halfh +"px"
        });
    }

    /*
    Bottom's affected:
    .box:hover .title == 110px (needs moving up depending on width of box as content beneath grows in height)
    
    */

}

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body {
    margin:0;
    padding:0;
}

.boxWrapper {
    font-size:0;
    /*-webkit-backface-visibility: hidden;*/
}

.box {
    cursor: pointer;
    height: 400px;
    position: relative;
    overflow: hidden;
    width: 300px;
    z-index:400;
    display:inline-block;
}
.gradient {
    background: -moz-linear-gradient(top, rgba(255, 255, 255, 0) 0%, rgba(128, 128, 128, 0) 50%, rgba(0, 0, 0, 0.5) 100%);
    /* FF3.6+ */
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, rgba(255, 255, 255, 0)), color-stop(50%, rgba(128, 128, 128, 0)), color-stop(100%, rgba(0, 0, 0, 0.5)));
    /* Chrome,Safari4+ */
    background: -webkit-linear-gradient(top, rgba(255, 255, 255, 0) 0%, rgba(128, 128, 128, 0) 50%, rgba(0, 0, 0, 0.5) 100%);
    /* Chrome10+,Safari5.1+ */
    background: -o-linear-gradient(top, rgba(255, 255, 255, 0) 0%, rgba(128, 128, 128, 0) 50%, rgba(0, 0, 0, 0.5) 100%);
    /* Opera 11.10+ */
    background: -ms-linear-gradient(top, rgba(255, 255, 255, 0) 0%, rgba(128, 128, 128, 0) 50%, rgba(0, 0, 0, 0.5) 100%);
    /* IE10+ */
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0) 0%, rgba(128, 128, 128, 0) 50%, rgba(0, 0, 0, 0.5) 100%);
    /* W3C */
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#00ffffff', endColorstr='#80000000', GradientType=0);
    /* IE6-9 */
    z-index:401;
    width:100%;
    height:100%;
    position:absolute;
    top:0;
    left:0;
}
.box img {
    position: absolute;
    left: 0;
    -webkit-transition: all 300ms ease-out;
    -moz-transition: all 300ms ease-out;
    -o-transition: all 300ms ease-out;
    -ms-transition: all 300ms ease-out;
    transition: all 300ms ease-out;
    z-index:400;
}
.box .title {
    position:absolute;
    bottom:20px;
    left:25px;
    text-transform:uppercase;
    z-index:404;
    color:#fff;
    font-size:30px;
    -webkit-transition: all 300ms ease-out;
    -moz-transition: all 300ms ease-out;
    -o-transition: all 300ms ease-out;
    -ms-transition: all 300ms ease-out;
    transition: all 300ms ease-out;
}
.box .title:after {
    content:'';
    margin-top:5px;
    display:block;
    height:4px;
    width:60%;
    background:#fff;
}
.box:hover .title {
    bottom:110px;
    -webkit-transition: all 300ms ease-out;
    -moz-transition: all 300ms ease-out;
    -o-transition: all 300ms ease-out;
    -ms-transition: all 300ms ease-out;
    transition: all 300ms ease-out;
}
.box .overbox {
    background-color: rgba(246, 48, 62, 0.85);
    margin: 10px;
    padding: 20px;
    width: 240px;
    height: 340px;
    position: absolute;
    color: #fff;
    z-index: 403;
    -webkit-transition: all 300ms ease-out;
    -moz-transition: all 300ms ease-out;
    -o-transition: all 300ms ease-out;
    -ms-transition: all 300ms ease-out;
    transition: all 300ms ease-out;
    opacity: 0;
}
.box:hover .overbox {
    opacity: 1;
    -webkit-transition: all 300ms ease-out;
    -moz-transition: all 300ms ease-out;
    -o-transition: all 300ms ease-out;
    -ms-transition: all 300ms ease-out;
    transition: all 300ms ease-out;
}
.box .overbox .tagline {
    position:absolute;
    bottom:0;
    padding-right: 20px;
    -webkit-transition: all 300ms ease-out;
    -moz-transition: all 300ms ease-out;
    -o-transition: all 300ms ease-out;
    -ms-transition: all 300ms ease-out;
    transition: all 300ms ease-out;
    font-size:16px;
}

.box:hover .overbox .tagline {
    bottom:20px;
    -webkit-transition: all 300ms ease-out;
    -moz-transition: all 300ms ease-out;
    -o-transition: all 300ms ease-out;
    -ms-transition: all 300ms ease-out;
    transition: all 300ms ease-out;
}

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<div class="boxWrapper">
<div class="box">
    <div class="gradient"></div>
    <img src="http://www.webtutorialplus.com/Images/css-effects-image/1.jpg" alt="Web Tutorial Plus - Demo" width="300" height="400" />
    <div class="title">Title</div>
    <div class="overbox">
        <div class="tagline">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras efficitur ex velit, eget pellentesque dui dictum at.</div>
    </div>
</div>
<div class="box">
    <div class="gradient"></div>
    <img src="http://www.webtutorialplus.com/Images/css-effects-image/1.jpg" alt="Web Tutorial Plus - Demo" width="300" height="400" />
    <div class="title">Title</div>
    <div class="overbox">
        <div class="tagline">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras efficitur ex velit, eget pellentesque dui dictum at.</div>
    </div>
</div>
<div class="box">
    <div class="gradient"></div>
    <img src="http://www.webtutorialplus.com/Images/css-effects-image/1.jpg" alt="Web Tutorial Plus - Demo" width="300" height="400" />
    <div class="title">Title</div>
    <div class="overbox">
        <div class="tagline">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras efficitur ex velit, eget pellentesque dui dictum at.</div>
    </div>
</div>
<div class="box">
    <div class="gradient"></div>
    <img src="http://www.webtutorialplus.com/Images/css-effects-image/1.jpg" alt="Web Tutorial Plus - Demo" width="300" height="400" />
    <div class="title">Title</div>
    <div class="overbox">
        <div class="tagline">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras efficitur ex velit, eget pellentesque dui dictum at.</div>
    </div>
</div>
<div class="box">
    <div class="gradient"></div>
    <img src="http://www.webtutorialplus.com/Images/css-effects-image/1.jpg" alt="Web Tutorial Plus - Demo" width="300" height="400" />
    <div class="title">Title</div>
    <div class="overbox">
        <div class="tagline">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras efficitur ex velit, eget pellentesque dui dictum at.</div>
    </div>
</div>
<div class="box">
    <div class="gradient"></div>
    <img src="http://www.webtutorialplus.com/Images/css-effects-image/1.jpg" alt="Web Tutorial Plus - Demo" width="300" height="400" />
    <div class="title">Title</div>
    <div class="overbox">
        <div class="tagline">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras efficitur ex velit, eget pellentesque dui dictum at.</div>
    </div>
</div>
</div>
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Answer 1

像素舍入。如果您生成的宽度为1000px，则应在333.33̅px生成每列 。

然而，不幸的是，每个浏览器/版本处理十进制像素的方式不同。这是一个方便的指南：http://cruft.io/posts/percentage-calculations-in-ie/

震惊恐怖，IE是最糟糕的。如果您在IE中运行它，请确保您的窗口1001px宽，并了解 的呈现方式。我希望你333.66̅px。不幸的是，他们会不高兴地达到333.67，最终可能会切断第3栏。

要做你需要做的事，你根本不需要JS：

http://jsfiddle.net/c6cwbjLz/14/

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html,
body {
  height: 100%;
  width: 100%;
}
body {
  margin: 0;
  padding: 0;
}
.boxWrapper {
  font-size: 0;
  height: 100%;
  width: 100%;
  /*-webkit-backface-visibility: hidden;*/
}
.gradient {
  background: -moz-linear-gradient(top, rgba(255, 255, 255, 0) 0%, rgba(128, 128, 128, 0) 50%, rgba(0, 0, 0, 0.5) 100%);
  /* FF3.6+ */
  background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, rgba(255, 255, 255, 0)), color-stop(50%, rgba(128, 128, 128, 0)), color-stop(100%, rgba(0, 0, 0, 0.5)));
  /* Chrome,Safari4+ */
  background: -webkit-linear-gradient(top, rgba(255, 255, 255, 0) 0%, rgba(128, 128, 128, 0) 50%, rgba(0, 0, 0, 0.5) 100%);
  /* Chrome10+,Safari5.1+ */
  background: -o-linear-gradient(top, rgba(255, 255, 255, 0) 0%, rgba(128, 128, 128, 0) 50%, rgba(0, 0, 0, 0.5) 100%);
  /* Opera 11.10+ */
  background: -ms-linear-gradient(top, rgba(255, 255, 255, 0) 0%, rgba(128, 128, 128, 0) 50%, rgba(0, 0, 0, 0.5) 100%);
  /* IE10+ */
  background: linear-gradient(to bottom, rgba(255, 255, 255, 0) 0%, rgba(128, 128, 128, 0) 50%, rgba(0, 0, 0, 0.5) 100%);
  /* W3C */
  filter: progid: DXImageTransform.Microsoft.gradient(startColorstr='#00ffffff', endColorstr='#80000000', GradientType=0);
  /* IE6-9 */
}
.box {
  cursor: pointer;
  height: 50%;
  position: relative;
  overflow: hidden;
  width: 33.33%;
  z-index: 400;
  display: inline-block;
  background-image: url("http://www.webtutorialplus.com/Images/css-effects-image/1.jpg");
  background-size: cover;
}
.box .title {
  position: absolute;
  bottom: 20px;
  left: 25px;
  text-transform: uppercase;
  z-index: 404;
  color: #fff;
  font-size: 30px;
  -webkit-transition: all 300ms ease-out;
  -moz-transition: all 300ms ease-out;
  -o-transition: all 300ms ease-out;
  -ms-transition: all 300ms ease-out;
  transition: all 300ms ease-out;
}
.box .title:after {
  content: '';
  margin-top: 5px;
  display: block;
  height: 4px;
  width: 60%;
  background: #fff;
}
.box:hover .title {
  bottom: 110px;
  -webkit-transition: all 300ms ease-out;
  -moz-transition: all 300ms ease-out;
  -o-transition: all 300ms ease-out;
  -ms-transition: all 300ms ease-out;
  transition: all 300ms ease-out;
}
.box .overbox {
  background-color: rgba(246, 48, 62, 0.85);
  margin: 10px;
  padding: 20px;
  box-sizing: border-box;
  /*make border and padding include in height/width */
  width: calc(100% - 20px);
  height: calc(100% - 20px);
  position: absolute;
  color: #fff;
  z-index: 403;
  -webkit-transition: all 300ms ease-out;
  -moz-transition: all 300ms ease-out;
  -o-transition: all 300ms ease-out;
  -ms-transition: all 300ms ease-out;
  transition: all 300ms ease-out;
  opacity: 0;
}
.box:hover .overbox {
  opacity: 1;
  -webkit-transition: all 300ms ease-out;
  -moz-transition: all 300ms ease-out;
  -o-transition: all 300ms ease-out;
  -ms-transition: all 300ms ease-out;
  transition: all 300ms ease-out;
}
.box .overbox .tagline {
  position: absolute;
  bottom: 0;
  padding-right: 20px;
  -webkit-transition: all 300ms ease-out;
  -moz-transition: all 300ms ease-out;
  -o-transition: all 300ms ease-out;
  -ms-transition: all 300ms ease-out;
  transition: all 300ms ease-out;
  font-size: 16px;
}
.box:hover .overbox .tagline {
  bottom: 20px;
  -webkit-transition: all 300ms ease-out;
  -moz-transition: all 300ms ease-out;
  -o-transition: all 300ms ease-out;
  -ms-transition: all 300ms ease-out;
  transition: all 300ms ease-out;
}

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<div class="boxWrapper">
  <div class="box gradient">
    <div class="title">Title</div>
    <div class="overbox">
      <div class="tagline">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras efficitur ex velit, eget pellentesque dui dictum at.</div>
    </div>
  </div>
  <div class="box gradient">
    <div class="title">Title</div>
    <div class="overbox">
      <div class="tagline">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras efficitur ex velit, eget pellentesque dui dictum at.</div>
    </div>
  </div>
  <div class="box gradient">
    <div class="title">Title</div>
    <div class="overbox">
      <div class="tagline">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras efficitur ex velit, eget pellentesque dui dictum at.</div>
    </div>
  </div>
  <div class="box gradient">
    <div class="title">Title</div>
    <div class="overbox">
      <div class="tagline">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras efficitur ex velit, eget pellentesque dui dictum at.</div>
    </div>
  </div>
  <div class="box gradient">
    <div class="title">Title</div>
    <div class="overbox">
      <div class="tagline">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras efficitur ex velit, eget pellentesque dui dictum at.</div>
    </div>
  </div>
  <div class="box gradient">
    <div class="title">Title</div>
    <div class="overbox">
      <div class="tagline">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras efficitur ex velit, eget pellentesque dui dictum at.</div>
    </div>
  </div>
</div>aaaaaaaaaaa bbbbbbbbbbb ccccccccccc

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我已经使用简单的width: 33.33%修复了similar problem。请注意，在我的情况下，我需要使用JS来计算其他无法响应的工作的高度和宽度。