How to Change Font Size in a Textbox in HTML

How to change font size in a textbox in html

For a <input type='text'> element:

input { font-size: 18px; }

or for a <textarea>:

textarea { font-size: 18px; }

or for a <select>:

select { font-size: 18px; }

you get the drift.

How to change the font and font size of an HTML input tag?

<input type ="text" id="txtComputer">

css

input[type="text"]
{
    font-size:24px;
}

how do you increase the height of an html textbox

I'm assuming from the way you worded the question that you want to change the size after the page has rendered?

In Javascript, you can manipulate DOM CSS properties, for example:

document.getElementById('textboxid').style.height="200px";
document.getElementById('textboxid').style.fontSize="14pt";

If you simply want to specify the height and font size, use CSS or style attributes, e.g.

//in your CSS file or <style> tag
#textboxid
{
    height:200px;
    font-size:14pt;
}

<!--in your HTML-->
<input id="textboxid" ...>

Or

<input style="height:200px;font-size:14pt;" .....>

Change size of text in text input tag?

<input style="font-size:25px;" type="text"/>

The above code changes the font size to 25 pixels.

Change input type=text font-size without changing its width

This seems to be a Firefox issue as Chrome & IE11 do not have any problems. (Can't test on Safari as on Windows).

One solution, wrap the individual inputs in divs and flex those and set the inputs to be 100% wide.

Tested in FF 40 and seems to work.

Codepen Demo

* {  -webkit-box-sizing: border-box;  -moz-box-sizing: border-box;  box-sizing: border-box;}input[type=text] {  display: block;  width: 100%;  border: 1px solid green;}.double {  flex: 2;}.single {  flex: 1;}.wrap {  display: flex;  margin-bottom: 1em;}.large input[type=text] {  font-size: 300%;}

<div class="wrap">
  <div class="double">    <input type="text" class="b4"></input>  </div>  <div class="single">    <input type="text" class="b2"></input>  </div></div>
<div class="wrap large">
  <div class="double">    <input type="text" class="b4"></input>  </div>  <div class="single">    <input type="text" class="b2"></input>  </div></div>

How to change textarea font size without affecting the width

Code in your width and height in the css.

textarea {
    width: 500px;
    height: 300px;
}

You can also do this in the html by using the rows, and cols attributes:

<textarea rows="4" cols="50"></textarea>

How to change textbox size(height) if text size increses?

You can use textarea
to show or get your long text values like that

<textarea  cols="40" rows="5" style="resize:none" name="address">
"502, Venus Atlantis, Nr. Shell Petrol Pump, Anandnahar-Prahladnagar Road, Ahmedabad,Gujarat, India"
</textarea>

Cols will change horizantal and Rows will change vertical length of input. Also you can use ReadOnly=true if you want to not implement an input but an output element instead of this.

Dynamically change the font size of an input text box to fill the dimensions

I know JQuery and JavaScript weren't mentioned or tagged, but what you want will need JavaScript, and the JQuery.InputFit plugin will do exactly what you want:

<input type="text" name="younameit" id="input">
<script type="text/javascript">
$('input').inputfit();
</script>

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