悬停时用倾斜背景填充元素

Question

我正在尝试创建 CSS 按钮悬停效果。但我没有设法用倾斜的形状填充元素。

悬停效果是如何设计的：

屏幕截图 1：实际外观。

屏幕截图 2：我希望悬停效果看起来像倾斜的一面。

.button_sliding_bg {
  color: #31302B;
  background: #FFF;
  padding: 12px 17px;
  margin: 25px;
  font-family: 'OpenSansBold', sans-serif;
  border: 3px solid #31302B;
  font-size: 14px;
  font-weight: bold;
  letter-spacing: 1px;
  text-transform: uppercase;
  border-radius: 2px;
  display: inline-block;
  text-align: center;
  cursor: pointer;
  box-shadow: inset 0 0 0 0 #31302B;
  -webkit-transition: all ease 0.8s;
  -moz-transition: all ease 0.8s;
  transition: all ease 0.8s;
}
.button_sliding_bg:hover {
  box-shadow: inset 200px 0 0 0 #31302B;
  color: #FFF;
}

<button class="button_sliding_bg">Buttontext</button>

Answer 1

您可以使用 css :after。

Jsfiddle

.button_sliding_bg {
    color: #31302B;
    background: #FFF;
    padding: 12px 17px;
    margin: 25px;
    font-family:'OpenSansBold', sans-serif;
    border: 3px solid #31302B;
    font-size: 14px;
    font-weight: bold;
    letter-spacing: 1px;
    text-transform: uppercase;
    border-radius: 2px;
    display: inline-block;
    text-align: center;
    cursor: pointer;
    box-shadow: inset 0 0 0 0 #31302B;
    -webkit-transition: all ease 0.8s;
    -moz-transition: all ease 0.8s;
    transition: all ease 0.8s;
    position: relative;
}
.button_sliding_bg:hover {
    box-shadow: inset 200px 0 0 0 #31302B;
    color: #FFF;
}
.button_sliding_bg:after {
    content:'';
    display: block;
    position: absolute;
    right: 0;
    bottom: 0;
    width: 0;
    height: 0;
    border-width: 0 0 0 0;
    border-color: transparent transparent #fff transparent;
    border-style: solid;
    border-width: 0 0 32px 30px;
    -webkit-transition: all ease 0.8s;
    -moz-transition: all ease 0.8s;
    transition: all ease 0.8s;
}

<button class="button_sliding_bg">Buttontext</button>

Answer 2

您可以使用此答案中描述的技术：Fill element from center on hover 并倾斜伪元素，使其倾斜填充按钮：

div {
  position: relative;
  display: inline-block;
  padding: 15px 70px;
  border: 5px solid #B17461;
  color: #B17461;
  font-size: 30px;
  font-family: arial;
  transition: color .5s;
  overflow:hidden;
}
div:before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 130%; height: 100%;
  background: #B17461;
  z-index: -1;
  transform-origin:0 0 ;
  transform:translateX(-100%) skewX(-45deg);
  transition: transform .5s;
}
div:hover {
  color: #fff;
}
div:hover:before {
  transform: translateX(0) skewX(-45deg);
}

<div>BUTTON</div>

不要忘记为浏览器支持添加供应商前缀（有关详细信息，请参阅canIuse）。

Answer 3

我相信您实际上是在寻找结束状态，以用背景色填充整个元素而不留下空隙。您也可以使用 linear-gradient 背景图像并转换它们的 background-size 和 background-position，如下面的 sn-p 所示。

在伪元素或转换上使用linear-gradient 的一个缺点是浏览器支持较低，但它不需要额外的伪元素，因此可以将它们留作其他用途。

.button_sliding_bg {
  color: #31302B;
  background: #FFF;
  padding: 12px 17px;
  margin: 25px;
  font-family: 'OpenSansBold', sans-serif;
  border: 3px solid #31302B;
  font-size: 14px;
  font-weight: bold;
  letter-spacing: 1px;
  text-transform: uppercase;
  border-radius: 2px;
  display: inline-block;
  text-align: center;
  cursor: pointer;
  background-image: linear-gradient(135deg, #31302B 50%, transparent 51%);
  background-size: 100px 100px; /* some initial size to get the slanted appearance */
  background-position: -50px -50px; /* negative positioning to hide it initially */
  background-repeat: no-repeat;
  transition: all ease 0.8s;
}
.button_sliding_bg:hover {
  background-size: 200% 200%; /* 200% because gradient is colored only for 50% */
  background-position: 0px 0px; /* bring it fully into view */
  color: #FFF;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/prefixfree/1.0.7/prefixfree.min.js"></script>
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