CSS3 / SVG 分隔符

Question

我正在尝试使用 svg 或纯 css3 制作标题分隔符，如下所示： preview from design

在标题中我有标准引导程序 4 轮播

<section class="slider">
        <div id="carousel" class="carousel slide carousel-fade" data-ride="carousel">
            <div class="carousel-inner">
                <div class="carousel-item active" style="background-image:url(images/20180818_STP501.jpg);">
                    <div class="container position-relative h-100">
                        <div class="carousel-container">
                            <div class="carousel-content">
                                <h2>Consectetuer adipiscing elit,<br/>diam nibh euismod tincidunt</h2>
                                <p>Enim ad veniam, ullamcorper<br/>suscipit aliquip commodo</p>
                                <div class="mt-5">
                                    <a href="#">Euismod</a>
                                </div>
                            </div>
                        </div>
                    </div>
                </div>
                <div class="carousel-item" style="background-image:url(images/20180818_STP501.jpg);">
                    <div class="container position-relative h-100">
                        <div class="carousel-container">
                            <div class="carousel-content">
                                <h2>Consectetuer adipiscing eli,<br/>diam nibh euismod tincidunt</h2>
                                <p>Enim ad veniam, ullamcorper<br/>suscipit aliquip commodo</p>
                                <div class="mt-5">
                                    <a href="#">Euismod</a>
                                </div>
                            </div>
                        </div>
                    </div>
                </div>
            </div>
            <a class="carousel-control-prev" href="#carousel" role="button" data-slide="prev">
                <span class="carousel-control-prev-icon" aria-hidden="true"></span>
                <span class="sr-only">Previous</span>
            </a>
            <a class="carousel-control-next" href="#carousel" role="button" data-slide="next">
                <span class="carousel-control-next-icon" aria-hidden="true"></span>
                <span class="sr-only">Next</span>
            </a>
        </div>
    </section>

边框半径工作正常，但我在底部标题中需要很少的圆形分隔符。它可能用css3制作吗？还是需要 svg 形状？

Answer 1

我希望这就是您要问的：在下一个示例中，我使用clip-path 来剪辑标题。请注意，我使用的路径的边界框为 1/1 和 clipPathUnits="objectBoundingBox"。

MDN 引用：该值表示元素内部的所有坐标都相对于应用剪切路径的元素的边界框。即坐标系的原点是物体边界框的左上角，物体边界框的宽度和高度被认为是长度为1个单位的值。

#header {
  padding: 0;
  background-image: url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/222579/castell.jpg);
  background-size: cover;
  height: 50vh;
  -webkit-clip-path: url(#clip);
  clip-path: url(#clip);  
}

<svg height="0" width="0" class="svg-clip" style="position:absolute">
    <defs>
         <clipPath id="clip" clipPathUnits="objectBoundingBox">
           <path d="M0,0L0,.5 A.6,.6 0 0 0 1,.5L1,0z" />
        </clipPath>
    </defs>
</svg>
 
<div id="header"></div>