html - 编辑元素大小 css 和 html

Question

您好，这里是当前网站 enter image description here

我正在尝试缩小图像大小，使其看起来像这样

enter image description here

我仍然希望元素水平和垂直居中。我尝试减少 .sample 宽度；图像变小了，但它现在不是水平和垂直居中的。如果您能指出我需要更改哪些值，那就太好了……提前致谢

.portfolio {
  position: relative;
  min-width: 300px;
  width: 100%;
  margin: 120px auto;
  list-style: none;
  margin-left: 70px;
  margin-top: 280px;
  margin-right: 0;
  margin-left: 0;
  padding-left: 5%;
}
.portfolio li {
  position: relative;
  float: left;
  margin: 20px 24px;
  margin-left: -15px;
  margin-bottom: -70px;
  width: 30%;
  padding-bottom: 10%;
  min-height: 270px;
  min-width: 270px;
  margin-left: -1%;
  margin-right: 1%;
}
.portfolio li .sample {
  position: absolute;
  display: block;
  box-shadow: 0px 0px 8px #fafafa;
  background-size: 100%;
  background-repeat: no-repeat;
  background-position: center;
  width: 90%;
  height: 56%;
  min-height: 180.36px;
}
.portfolio li:hover .sample {
  box-shadow: 0px 0px 12px #eee;
}
.details {
  position: absolute;
  bottom: 100px;
  width: 90%;
  display: block;
  margin: 10px;
  font-size: 17px;
  text-align: center;
  color: #8C8C8C;
  letter-spacing: 1.4px;
  margin-left: 0px;
  margin-right: 0px;
}

<ul id="portfolio" class="portfolio">
  <li>
    <a href="item/samplepage.html">
      <div class="sample" style="background-image: url('/images/clearear.png');"></div>
      <div class="details">Clearear - website</div>
    </a>
  </li>


  <li>
    <a href="item/newsreader.html">
      <div class="sample" style="background-image: url('/images/newsreader.png');"></div>
      <div class="details">Social newsreader - ux/ui</div>
    </a>
  </li>

  <li>
    <a href="item/kbeauty.html">
      <div class="sample" style="background-image: url('/images/kbeauty.png');"></div>
      <div class="details">K-beauty app - ux/ui</div>
    </a>
  </li>
</ul>

Answer 1

只需更改这 3 个值:

.portfolio {
    width: 80%;
    margin-right: auto;
    margin-left: auto;
}

要完全消除或减少水平边距，请使用这些值:

.portfolio li {
    position: relative;
    float: left;
    margin: 20px 30px; /* tweak this however you like  */
    /* margin-left: -15px; remove this */
    margin-bottom: -70px;
    width: 20%; /* tweak this however you like  */
    padding-bottom: 10%;
    min-height: 200px; /* lower this  */
    min-width: 200px; /* lower this  */
    /* margin-left: -1%; remove this */
    /* margin-right: 1%; remove this */
}
.details { width: 100%; }
.portfolio li .sample { width: 100%; }

因为其他所有内容都是在 % 中设计的，所以我们可以缩小父级并将其居中，其余部分也将效仿。