Let's say I have an html snippet like this:
<div style="width:300px;">
<label for="MyInput">label text</label>
<input type="text" id="MyInput" />
</div>
This isn't my exact code, but the important thing is there's a label and a text input on the same line in a fixed-width container. How can I style the input to fill the remaining width of the container without wrapping and without knowing the size of the label?
as much as everyone hates tables for layout, they do help with stuff like this, either using explicit table tags or using display:table-cell
<div style="width:300px; display:table">
<label for="MyInput" style="display:table-cell; width:1px">label text</label>
<input type="text" id="MyInput" style="display:table-cell; width:100%" />
</div>
If you're using Bootstrap 4:
<form class="d-flex">
<label for="myInput" class="align-items-center">Sample label</label>
<input type="text" id="myInput" placeholder="Sample Input" class="flex-grow-1"/>
</form>
Better yet, use what's built into Bootstrap:
<form>
<div class="input-group">
<div class="input-group-prepend">
<label for="myInput" class="input-group-text">Default</label>
</div>
<input type="text" class="form-control" id="myInput">
</div>
</form>
The answers given here are a bit outdated. So, here I'm with the easiest solution using modern flexbox.
.input-container{
display:flex;
}
input{
flex-grow: 1;
margin-left: 5px;
}<div style="width:300px;">
<div class="input-container">
<label for="MyInput">label text: </label>
<input type="text" id="MyInput"/>
</div>
<div class="input-container">
<label for="MyInput2">Long label text: </label>
<input type="text" id="MyInput2" />
</div>
</div>