* {
  margin: 0;
  padding: 0;
}
.box {
  width: 230px;
  border: 1px solid red;
}
input {
  width: 30px;
  line-height: 20px;
  background: #e5e5e5;
  border: 0;
  text-align: center;
  padding: 0 5px;
  font-size: 14px;
}
span {
  padding: 0 2px;
  cursor: pointer;
  line-height: 20px;
  font-size: 14px;
  display: inline-block;
}

<div class="box">
  <span>xx</span>
  <input type="text" value="322xxx">





我想知道为什么span的底部和outdiv的底部之间有1px的间距?有人可以帮我吗?

最佳答案

您需要为vertical-align:top display: inline-block标记设置span



*{
        margin: 0;
        padding: 0;
    }
   .box{
       width: 230px;
       border:1px solid red;
   }
    input{
        width: 30px;
        line-height: 20px;
        background: #e5e5e5;
        border: 0;
        text-align: center;
        padding: 0 5px;
        font-size: 14px;
    }
    span{
        padding: 0 2px;
        cursor: pointer;
        line-height:20px;
        font-size: 14px;
        display: inline-block;
      vertical-align: top;
    }

<div class="box">
<span>xx</span>
<input type="text" value="322xxx">

10-05 20:38
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