html - 自定义可调整大小的 div

Question

创建可调整大小的 div(调整大小:两者都是 CSS)后，我准备在单击 div 的右下角后调整它的大小。在 Firefox 中它看起来像:

但是我想把我的自定义图片放在那里，怎么办？

#resizeablediv {
    width:200px;
    height:200px;
    resize:both;
    background-color:black;
    overflow:auto;
}

DEMO

Answer 1

这是获取自定义按钮/图像的方法 - 将您想要的任何内容放在 div 的右下角

.parent {
  border: none;
  cursor: pointer;
  display: inline-block;
  padding: 0;
  position: relative;
}

.parent:after {
  border: 3px solid cyan;
  border-radius: 50%;
  bottom: 0;
  box-shadow: inset 0 0 0 1px rgba(14, 19, 24, .15);
  box-sizing: border-box;
  content: " ";
  cursor: pointer;
  display: block;
  pointer-events: none;
  position: absolute;
  right: 0;
  height: 20px;
  width: 20px;
  animation: blink 2s infinite;
}

@keyframes blink {
  from,
  to {
    background: rgba(0, 255, 255, 0.5)
  }
  50% {
    background: transparent
  }
}

.child {
  background: salmon;
  cursor: pointer;
  height: 150px;
  width: 345px;
  min-width: 300px;
  min-height: 150px;
  max-height: 100vh;
  max-width: 100vw;
  opacity: 0;
  overflow: auto;
  pointer-events: none;
  resize: both;
  background: #444;
}

.content {
  padding: 20px;
  position: absolute;
  left: -7px;
  right: -7px;
  top: -7px;
  bottom: -7px;
  color: cyan;
  font-family: Arial;
  background: #444;
  letter-spacing: 2px;
  border-radius: 15px;
}

<div class='parent'>
  <div class="content">
    r e s i z e a b l e r e s i z e a b l e r e s i z e a b l e r e s i z e a b l e r e s i z e a b l e r e s i z e a b l e r e s i z e a b l e r e s i z e a b l e r e s i z e a b l e r e s i z e a b l e r e s i z e a b l e r e s i z e a b l e
  </div>
  <div class="child"></div>
</div>