<style>
div {
  width: 0px;
}
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<!-- While the whitespace character normally indicates soft wrap opportunities, pre/nowrap white-space property values disable them -->
<div><span style="white-space: pre">should not </span>wrap</div>
<div><span style="white-space: nowrap">should not </span>wrap</div>
<div><span style="white-space: pre">should not </span><span style="white-space: normal">wrap</span></div>
<div><span style="white-space: nowrap">should not </span><span style="white-space: normal">wrap</span></div>
<div>should<span style="white-space: pre"> not </span>wrap</div>
<div>should<span style="white-space: nowrap"> not </span>wrap</div>