我需要用HTML復(fù)制你在這張圖片中看到的內(nèi)容:

問題是文本用背景圖像覆蓋了一個div。如果在外部的div中沒有圖像和純色，我可以想象我可以很容易地用一些小的html元素在正確的位置放置圓角，但是背景圖像增加了復(fù)雜性。

到目前為止，我有這個...如你所見，我被困在兩個圓角上。有人能提出解決辦法嗎？：

#outer {
    width:100%;
    height:400px;
    border-radius:20px;
    background-image:url(https://media.istockphoto.com/id/1323032473/es/vector/panal-abstracto-de-vector-azul-moderno-con-fondo-de-monitor-de-coraz%C3%B3n-con-para-la.jpg?s=2048x2048&w=is&k=20&c=mXe4wSHc8kAcOXastbN9jhinrWGQX3vvJQUhDgvOcqA=);
    position:relative;
}
#innertext {
    display:inline;
    border-top-right-radius:20px;
    background-color:#fff;
    padding:5px 25px 0px 5px;
    font-size:40px;
    color:#000;
    
    position:absolute;
    bottom:0px;
}

<div id="outer">
    <div id="innertext">A test title<br>that is on two lines</div>
</div>

# # #我將重復(fù)使用我在以前的答案中使用的相同的想法，我考慮和SVG過濾器來創(chuàng)建圓角。

#outer {
  height: 300px;
  background-image: url(https://media.istockphoto.com/id/1323032473/es/vector/panal-abstracto-de-vector-azul-moderno-con-fondo-de-monitor-de-coraz%C3%B3n-con-para-la.jpg?s=2048x2048&w=is&k=20&c=mXe4wSHc8kAcOXastbN9jhinrWGQX3vvJQUhDgvOcqA=);
  position: relative;
  overflow: hidden;
}
/* place the div at the bottom left */
#innertext {
  font-size: 40px;
  position: absolute;
  z-index: 0;
  bottom: 5px;
  left: 5px;
  filter: url('#round'); /* apply the filter to round the corners*/
}
/* use an inline element inside */
#innertext > span {
  background-color: #fff;
  padding: 5px 10px;
  /* make sure the padding apply to all the lines */
  -webkit-box-decoration-break: clone;
          box-decoration-break: clone;
}
/* add two lines on the left and the bottom to complete the puzzle */
#innertext:before,
#innertext:after {
  content:"";
  position: absolute;
  z-index: -1;
  background: #fff;
  left:-10px;
  bottom: -10px;
}
/* vertical line */
#innertext:before {
  height: 999px; /* very big value */
  width: 20px;
}
/* horizontal line */
#innertext:after {
  width: 999px; /* very big value */
  height: 20px;
}

<div id="outer">
  <div id="innertext"><span>A test title<br>that is on two lines</span></div>
</div>

<!-- the SVG filter -->
<svg style="visibility: hidden; position: absolute;" width="0" height="0" xmlns="http://www.w3.org/2000/svg" version="1.1">
    <defs>
        <filter id="round">
            <feGaussianBlur in="SourceGraphic" stdDeviation="8" result="blur" />    
            <feColorMatrix in="blur" mode="matrix" values="1 0 0 0 0  0 1 0 0 0  0 0 1 0 0  0 0 0 20 -8" result="goo" />
            <feComposite in="SourceGraphic" in2="goo" operator="atop"/>
        </filter>
    </defs>
</svg>

# # #您需要向添加:before和:after。innertext元素

更新:

要有多行，只需添加一個flex-direction: column容器，每一行都有:after(右)角，并且只有第一個子元素有:before(上)角

#outer {
  width: 100%;
  height: 400px;
  border-radius: 20px;
  background-image: url(https://media.istockphoto.com/id/1323032473/es/vector/panal-abstracto-de-vector-azul-moderno-con-fondo-de-monitor-de-coraz%C3%B3n-con-para-la.jpg?s=2048x2048&w=is&k=20&c=mXe4wSHc8kAcOXastbN9jhinrWGQX3vvJQUhDgvOcqA=);
  position: relative;
}
#inner-container {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  position: absolute;
  bottom: 0px;
}
.innertext {
  display: inline;
  position: relative;
  border-top-right-radius: 20px;
  background-color: #fff;
  padding: 5px 25px 0px 5px;
  font-size: 40px;
  color: #000;
}
.innertext:first-child::before,
.innertext::after {
  content: "";
  display: block;
  width: 40px;    /* double the radius */
  height: 40px;   /* double the radius */
  background-color: transparent;
  position: absolute;
  border-bottom-left-radius: 20px;
  box-shadow: 0 20px 0 0 #fff;  /* this to create the inverted corner border radius area, if you desire to change the positon you can control it via the first two values 0 20px which represents the x & y */
}
.innertext::before {
  top: -40px;
  left: 0;
}
.innertext::after {
  right: -40px;
  bottom: 0;
}
.innertext span {
  position: relative;
  z-index: 1;   /* to overcome the overlapping with the text */
}

<div id="outer">
  <div id="inner-container">
    <div class="innertext"><span>A test</span></div>
    <div class="innertext"><span>A test with a second line</span></div>
  </div>
</div>