Responsive Forms with CSS Flexbox

01/07/2021

Contents

Demo

Full Screen

Code

HTML

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width,initial-scale=1">
    <title>CSS Flexbox Responsive Forms</title>
    <link rel="stylesheet" type="text/css" href="https://demo.plantpot.works/assets/css/normalize.css">
    <link rel="stylesheet" href="https://use.typekit.net/opg3wle.css">
    <link rel="stylesheet" type="text/css" href="style.css">
  </head>
  <body>
    <div id="container">
      <div class="form-box">
        <form class="c-form" name="c-form" action="#" method="post">
          <div class="two-columns">
            <fieldset>
              <label class="c-form-label" for="last-name">Last name<span class="c-form-required"> *</span></label>
              <input id="last-name" class="c-form-input" type="text" name="your-last-name" placeholder="Your last name" required>
            </fieldset>

            <fieldset>
              <label class="c-form-label" for="first-name">First name<span class="c-form-required"> *</span></label>
              <input id="first-name" class="c-form-input" type="text" name="your-first-name" placeholder="Your first name" required>
            </fieldset>
          </div>

          <fieldset>
            <label class="c-form-label" for="email">Email address<span class="c-form-required"> *</span></label>
            <input id="email" class="c-form-input" type="email" name="your-email" placeholder="Email@example.com" required>
          </fieldset>

          <fieldset>
            <label class="c-form-label" for="subject">Subject<span class="c-form-required"> *</span></label>
            <input id="subject" class="c-form-input" type="text" name="your-subject" placeholder="Enter subject" required>
          </fieldset>

          <fieldset>
            <label class="c-form-label" for="comments">Comments<span class="c-form-required"> *</span></label>
            <textarea id="comments" class="c-form-input" name="your-comments" placeholder="Enter comments" required></textarea>
          </fieldset>
          <button class="c-form-btn" type="submit">SUBMIT</button>
        </form>
      </div>
    </div>
  </body>
</html>

CSS

@charset "utf-8";
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  font-size: 16px;
}
body {
  background-color: #000046;
  font-family: futura-pt, sans-serif;
  -webkit-tap-highlight-color: rgba(0,0,0,0);
}
#container {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  width: 100%;
  height: auto;
  min-height: 600px;
  padding: 20px;
}
.form-box {
  width: 100%;
  max-width: 400px;
  padding: 30px 15px;
  border-radius: 4px;
  background-color: #fff;
}
.c-form {
  display: flex;
  flex-direction: column;
  width: 100%;
}
.c-form-label {
  display: inline-block;
  margin: .5rem 0;
  color: #3d3935;
  letter-spacing: .2px;
  font-size: 1rem;
}
.c-form-input {
  width: 100%;
  padding: 15px 10px;
  border: 1px solid #3d3935;
  border-radius: 4px;
  background-color: #fff;
  color: #3d3935;
  outline: 0;
}
.c-form-input::placeholder {
  color: #867d6c;
  font-size: 1rem;
}
.c-form-required {
  color: #b0092d;
}
textarea.c-form-input {
  width: 100%;
  min-height: 10ch;
  max-height: 120ch;
  padding: 10px;
  resize: none;
}
.two-columns {
  display: grid;
  grid-template-columns: 100%;
}
fieldset {
  margin: .4rem 0;
  padding: 0;
  border: none;
}
.c-form-btn {
  width: 100%;
  margin-top: 10px;
  padding: 15px;
  border: none;
  border-radius: 4px;
  background-color: #3d3935;
  color: #fff;
  font-size: 1.125rem;
  letter-spacing: 2px;
  text-align: center;
  outline: none;
  cursor: pointer;
}
@media screen and (min-width: 481px) {
  .two-columns {
    grid-template-columns: 48.7804878% 48.7804878%;
    grid-column-gap: 2.43902439%;
  }
}
#Flexbox#Form