无法在一侧设置边框半径,在另一侧设置常规边框

Can´t set border radius on one side and a regular border on the opposite side

出于某种原因,我的常规半透明右边框在左侧和底部具有 border-radius 的元素上不起作用。我该如何解决?

查看代码段和 codepen

body {
  background: red;
}

.item {
  margin-left: 10px;
}

.box {
  border-right: 1px solid rgba(0, 0, 0, 0.3);
  line-height: 10px;
  margin-left: -5px;
  display: inline-block;
  width: 300px;
  background: white;
}

.border {
  border-right: 1px solid rgba(0, 0, 0, 0.3);
  border-top-left-radius: 10px;
  border-bottom-left-radius: 10px;
}
<div id="container">
  <div class="box border">
    <p class="item"> Origen</p>
    <p class="item"> Buenos Aires</p>
  </div>
  <div class="box">
    <p class="item"> Origen</p>
    <p class="item"> Buenos Aires</p>
  </div>
  <div class="box">
    <p class="item"> Origen</p>
    <p class="item"> Buenos Aires</p>
  </div>
</div>

不要使用边距来删除inline个元素之间的space。将 containerfont-size 设置为零,并将 boxfont-size 重置为零 - 现在看看问题是如何 解决的

body {
  background: red;
}

.item {
  margin-left: 10px;
}

#container {
  font-size: 0; /* ADDED */
}

.box {
  font-size: initial; /* ADDED */
  border-right: 1px solid rgba(0, 0, 0, 0.3);
  line-height: 10px;
  /*margin-left: -5px;*/
  display: inline-block;
  width: 300px;
  background: white;
}

.border {
  border-right: 1px solid rgba(0, 0, 0, 0.3);
  border-top-left-radius: 10px;
  border-bottom-left-radius: 10px;
}
<div id="container">
  <div class="box border">
    <p class="item"> Origen</p>
    <p class="item"> Buenos Aires</p>
  </div>
  <div class="box">
    <p class="item"> Origen</p>
    <p class="item"> Buenos Aires</p>
  </div>
  <div class="box">
    <p class="item"> Origen</p>
    <p class="item"> Buenos Aires</p>
  </div>
</div>