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9.1 CSS Forms

The look of an HTML form can be greatly improved with CSS







Styling Input Fields

Use the width property to determine the width of the input field:


Example 1: an input field
input {
  width: 65%;
}

The example above applies to all <input> elements. If you only want to style a specific input type, you can use attribute selectors:

Padded Inputs

Use the padding property to add space inside the text field.

Tip: When you have many inputs after each other, you might also want to add some margin, to add more space outside of them:




Example 2: padded input fields
input[type=text] {
  width: 100%;
  padding: 12px 20px;
  margin: 8px 0;
  box-sizing: border-box;
}

Note that we have set the box-sizing property to border-box. This makes sure that the padding and eventually borders are included in the total width and height of the elements.
Read more about the box-sizing property in our CSS Box Sizing chapter.

Bordered Inputs

Use the border property to change the border size and color, and use the border-radius property to add rounded corners:



Example 3: input fields with borders
input[type=text] {
  border: 2px solid red;
  border-radius: 4px;
}

If you only want a bottom border, use the border-bottom property:



Example 4: input fields with bottom border
input[type=text] {
  border: none;
  border-bottom: 2px solid red;
}

Colored Inputs

Use the background-color property to add a background color to the input, and the color property to change the text color:



Example 5: input fields with color
input[type=text] {
  background-color: #3CBC8D;
  color: white;
}

Focused Inputs

By default, some browsers will add a blue outline around the input when it gets focus (clicked on). You can remove this behavior by adding outline: none; to the input.
Use the :focus selector to do something with the input field when it gets focus:

Example 6A: input fields with color on :focus
input[type=text]:focus {
background-color: lightblue;
}
Example 6B: input fields with black border on :focus
input[type=text]:focus {
  border: 3px solid #555;
}


Input with icon/image

If you want an icon inside the input, use the background-image property and position it with the background-position property. Also notice that we add a large left padding to reserve the space of the icon:

Example 7: input field with an icon inside
input[type=text] {
  background-color: white;
  background-image: url('searchicon.png');
  background-position: 10px 10px;
  background-repeat: no-repeat;
  padding-left: 40px;
}

Animated Search Input

In this example we use the CSS transition property to animate the width of the search input when it gets focus. You will learn more about the transition property later, in our CSS Transitions chapter.

Example 8: animated search
input[type=text] {
  transition: width 0.4s ease-in-out;
}

input[type=text]:focus {
  width: 100%;
}

Styling Textareas

Tip: Use the resize property to prevent textareas from being resized (disable the "grabber" in the bottom right corner):

Example 9: styling textarea
textarea {
  width: 100%;
  height: 150px;
  padding: 12px 20px;
  box-sizing: border-box;
  border: 2px solid #ccc;
  border-radius: 4px;
  background-color: #f8f8f8;
  resize: none;
}

Styling Select Menus

Example 10: styling select menu
select {
  width: 100%;
  padding: 16px 20px;
  border: none;
  border-radius: 4px;
  background-color: #f1f1f1;
}

Styling Input Buttons

Example 11: styling form buttons
input[type=button], input[type=submit], 
input[type=reset] {
  background-color: #4CAF50;
  border: none;
  color: white;
  padding: 16px 32px;
  text-decoration: none;
  margin: 4px 2px;
  cursor: pointer;
}

/* Tip: use width: 100% for full-width buttons */

Responsive Form

Resize the browser window to see the effect. When the screen is less than 600px wide, make the two columns stack on top of each other instead of next to each other.

Advanced: The following example uses media queries to create a responsive form. You will learn more about this in a later chapter.


Example 12: responsive forms
<style>
* {
  box-sizing: border-box;
}

input[type=text], select, textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid #ccc;
  border-radius: 4px;
  resize: vertical;
}

label {
  padding: 12px 12px 12px 0;
  display: inline-block;
}

input[type=submit] {
  background-color: #04AA6D;
  color: white;
  padding: 12px 20px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  float: right;
}

input[type=submit]:hover {
  background-color: #45a049;
}

.container {
  border-radius: 5px;
  background-color: #f2f2f2;
  padding: 20px;
}

.col-25 {
  float: left;
  width: 25%;
  margin-top: 6px;
}

.col-75 {
  float: left;
  width: 75%;
  margin-top: 6px;
}

/* Clear floats after the columns */
.row::after {
  content: "";
  display: table;
  clear: both;
}

/* Responsive layout - when the screen is less than 
600px wide, make the two columns stack on top of 
each other instead of next to each other */
@media screen and (max-width: 600px) {
  .col-25, .col-75, input[type=submit] {
    width: 100%;
    margin-top: 0;
  }
}
</style>

CSS Counter Properties

Property Description
content Used with the ::before and ::after pseudo-elements, to insert generated content
counter-increment Increments one or more counter values
counter-reset Creates or resets one or more counters