How to properly align the span and input elements?

Question

I want to align a <span> element and the <input> text element. The height of <input> and <span> should be the same, the top and bottom border should be on same line and the text inside the <input> and <span> elements should be on the same line.

.cnt {
  margin: 5px;
}
.one {
  background-color: #ffffff;
  border: solid 1px #ADADAD;
  height: 17px;
}
.two {
  background-color: #ffffff;
  border: solid 1px #ADADAD;
  height: 17px;
}
.in {
  background-color: #ffffff;
  border: solid 1px #ADADAD;
  height: 17px;
}
input {
  padding: 0;
}

<div class="cnt">
  <label>
    <span class="one">Test in Span</span>
    <span class="two">Span in test</span>
  </label>
  <input class="in" value="mmmnnnxx" type="text" />
</div>

https://jsfiddle.net/ajo4boom/

How to do what I want?

Answer 1

I've found success by using an external stylesheet such as normalize.css. They're very useful for making sure your tags stay aligned across all browsers.

Another solution would be to do the following:

.cnt {
  margin: 5px;
}
.one {
  background-color: #ffffff;
  border: solid 1px #ADADAD;
  height: 17px;
}
.two {
  background-color: #ffffff;
  border: solid 1px #ADADAD;
  height: 17px;
}
.in {
  background-color: #ffffff;
  border: solid 1px #ADADAD;
  height: 17px;
}
input {
  position: relative;
  top: -1px;
  padding: 0;
}

<div class="cnt">
  <label>
    <span class="one">Test in Span</span>
    <span class="two">Span in test</span>
  </label>
  <input class="in" value="mmmnnnxx" type="text" />
</div>

Simply offset the <input> by adding

input {
    position: relative;
    top: -1px;
}

More info on relative positioning in CSS.

Answer 2

Just add vertical-align to input.

Check: https://jsfiddle.net/ajo4boom/1/