我如何使用 html css 和 bootstrap 创建照片拼贴

Question

我尝试将图像添加到 div 它对我不起作用，

<img
                  class="img-fluid"
                  src="https://via.placeholder.com/800x800"
                  style="border-radius: 20px"
                />

因此，我尝试将背景图像添加到 div，当我将图像添加到 div 时，图像不会显示？谁能告诉我一个解决方案，为什么会发生这种情况？

<div class="col-lg-6">
            <!-- ??????? how do i create the grid -->
            <div class="row g-0">
              <div class="col-lg-4">
                <div
                  class="imgcollage"
                  style="background-image: url(../img/img2.jpg)"
                ></div>
              </div>
              <div class="col-lg-8">
                <div
                  class="imgcollage"
                  style="background-image: url(../img/img2.jpg)"
                ></div>
              </div>
            </div>
            <div class="row g-0">
              <div class="col-lg-8">
                <div
                  class="imgcollage"
                  style="background-image: url(../img/img2.jpg)"
                ></div>
              </div>
              <div class="col-lg-4">
                <div
                  class="imgcollage"
                  style="background-image: url(../img/img3.jpg)"
                ></div>
              </div>
            </div>
          </div>

这是css

.imgcollage {
  height: 100%;
  width: 100%;
  background-position: center;
  background-size: cover;
  border-radius: 20px;
}

Answer 1

请访问此链接https://mdbootstrap.com/docs/standard/extended/gallery/您可以看到使用 Bootstrap 制作的多种类型的画廊和拼贴画。

Answer 2

抱歉，我正在用工作图片发布另一个答案，其他图片不起作用，因为它们实际上不是网址

 .imgcollage { height: 100%; width: 100%; background-position: center; background-size: cover; border-radius: 20px; } .col-lg-6{ display:grid; /* declares how many columns there will automaticaly be and how big they will be +rows and how big of a gap between them*/ grid-template-columns: 250px 250px; grid-template-rows: 250px 250px; grid-gap: 15px;

 <div class="col-lg-6"> <!-- ??????? how do i create the grid --> <div class="imgcollage" style="background-image: url(https://images.pexels.com/photos/2253275/pexels-photo-2253275.jpeg?auto=compress&cs=tinysrgb&dpr=1&w=500)" ></div> <div class="imgcollage" style="background-image: url(https://images.pexels.com/photos/1108099/pexels-photo-1108099.jpeg?auto=compress&cs=tinysrgb&dpr=1&w=500)" ></div> <div class="imgcollage" style="background-image: url(https://images.pexels.com/photos/731022/pexels-photo-731022.jpeg?auto=compress&cs=tinysrgb&dpr=1&w=500)" ></div> <div class="imgcollage" style="background-image: url(https://images.pexels.com/photos/2623968/pexels-photo-2623968.jpeg?auto=compress&cs=tinysrgb&dpr=1&w=500)" ></div> </div>