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htmlcssborder-radius

How to apply border-radius in CSS?

I'm working on a tutorial-based website design. I've added border-radius: 40px; to a CSS class, but the rounded corners aren't showing up. Here's the relevant CSS and images of the expected vs. actual results:

Expected:

tutorial's result with rounded corners

My Result:

my result without rounded corners

I've already validated my code and checked for typos. Are there other reasons why the border-radius might not be working?

@import url('https://fonts.googleapis.com/css2?family=Ubuntu:wght@300;400;500;700&display=swap');
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Ubuntu', sans-serif;
}

 :root {
  --blue: #287bff;
  --white: #fff;
  --grey: #f5f5f5;
  --black1: #222;
  --black2: #999;
}

body {
  min-height: 100vh;
  overflow-x: hidden;
}

.container {
  position: relative;
  width: 100%;
}

.navigation {
  position: fixed;
  width: 300px;
  height: 100%;
  background: var(--blue);
  border-left: 10px solid var(--blue);
  transition: 0.5s;
  overflow: hidden;
}

.navigation ul {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
}

.navigation ul li {
  position: relative;
  width: 100%;
  list-style: none;
  border-top-left-radius: 30px;
  border-bottom-left-radius: 30px;
}

.navigation ul li:hover,
.navigation ul li.hovered {
  background: var(--white);
}

.navigation ul li:nth-child(1) {
  margin-bottom: 40px;
  pointer-events: none;
}

.navigation ul li a {
  position: relative;
  display: block;
  width: 100%;
  display: flex;
  text-decoration: none;
  color: var(--white);
}

.navigation ul li:hover a,
.navigation ul li.hovered a {
  color: var(--blue);
}

.navigation ul li a .icon {
  position: relative;
  display: block;
  min-width: 60px;
  height: 60px;
  line-height: 70px;
  text-align: center;
}

.navigation ul li a .icon ion-icon {
  font-size: 1.75em;
}

.navigation ul li a .title {
  position: relative;
  display: block;
  padding: 0 10px;
  height: 60px;
  line-height: 60px;
  text-align: start;
  white-space: nowrap;
}


/*curve outs*/

.navigation ul li:hover a::before,
.navigation ul li.hovered a::before {
  content: '';
  position: absolute;
  right: 0;
  top: -50px;
  width: 50px;
  height: 50px;
  background: transparent;
  border-radius: 50%;
  box-shadow: 35px 35px 0 10px var(--white);
  pointer-events: none;
}

.navigation ul li:hover a::after,
.navigation ul li.hovered a::after {
  content: '';
  position: absolute;
  right: 0;
  bottom: -50px;
  width: 50px;
  height: 50px;
  background: transparent;
  border-radius: 50%;
  box-shadow: 35px -35px 0 10px var(--white);
  pointer-events: none;
}

.main {
  position: absolute;
  width: calc(100% - 300px);
  left: 300px;
  min-height: 100vh;
  background: var(--white);
  transition: 0.5s;
}

.topbar {
  width: 100%;
  height: 60px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 10px;
}

.toggle {
  position: relative;
  width: 60px;
  height: 60px;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 2.5em;
  cursor: pointer;
}

.search {
  position: relative;
  width: 400px;
  margin: 0 10px;
}

.search label {
  position: relative;
  width: 100%;
}

.search label input {
  width: 100%;
  height: 40px;
  border-radius: 40px;
  padding: 5px 20px;
  padding-left: 35px;
  font-size: 18px;
  outline: none;
  border: 1px solid var(--black2);
}

.search label ion-icon {
  position: absolute;
  top: 0;
  left: 10px;
  font-size: 1.2em;
}
<div class="container">
  <div class="navigation">
    <ul>
      <li>
        <a href="#">
          <span class="icon"><ion-icon name="logo-apple"></ion-icon></span>
          <span class="title">Brand Name</span>
        </a>
      </li>
      <li>
        <a href="#">
          <span class="icon"><ion-icon name="home-outline"></ion-icon></span>
          <span class="title">Dashboard</span>
        </a>
      </li>
      <li>
        <a href="#">
          <span class="icon"><ion-icon name="person-outline"></ion-icon></span>
          <span class="title">Customers</span>
        </a>
      </li>
      <li>
        <a href="#">
          <span class="icon"><ion-icon name="chatbubble-outline"></ion-icon></span>
          <span class="title">Message</span>
        </a>
      </li>
      <li>
        <a href="#">
          <span class="icon"><ion-icon name="help-outline"></ion-icon></span>
          <span class="title">Help</span>
        </a>
      </li>
      <li>
        <a href="#">
          <span class="icon"><ion-icon name="settings-outline"></ion-icon></span>
          <span class="title">Setting</span>
        </a>
      </li>
      <li>
        <a href="#">
          <span class="icon"><ion-icon name="lock-closed-outline"></ion-icon></span>
          <span class="title">Password</span>
        </a>
      </li>
      <li>
        <a href="#">
          <span class="icon"><ion-icon name="log-out-outline"></ion-icon></span>
          <span class="title">Sign Out</span>
        </a>
      </li>
    </ul>
  </div>

Solution

  • Remember that the code is case sensitive.

    @import url('https://fonts.googleapis.com/css2?family=Ubuntu:wght@300;400;500;700&display=swap');
*
{
   margin: 0;
   padding: 0;
   box-sizing: border-box;
   font-family: 'Ubuntu', sans-serif;
}
:root
{
   --blue: #287bff;
   --white: #fff;
   --grey: #f5f5f5;
   --black1: #222;
   --black2: #999;
}
body
{
   min-height: 100vh;
   overflow-x: hidden;
}
.container
{
   position: relative;
   width: 100%;
}
.navigation
{
   position: fixed;
   width: 300px;
   height: 100%;
   background: var(--blue);
   border-left: 10px solid var(--blue);
   transition: 0.5s;
   overflow: hidden;

}
.navigation ul
{
   position:absolute;
   top: 0;
   left: 0;
   width: 100%;
}
.navigation ul li
{
    position: relative;
    width: 100%;
    list-style: none;
    border-top-left-radius: 30px;
    border-bottom-left-radius: 30px;
}
.navigation ul li:hover,
.navigation ul li.hovered
{
    background: var(--white);
}
.navigation ul li:nth-child(1)
{
    margin-bottom: 40px;
    pointer-events: none;
}
.navigation ul li a
{
    position: relative;
    display: block;
    width: 100%;
    display: flex;
    text-decoration: none;
    color: var(--white);
}
.navigation ul li:hover a,
.navigation ul li.hovered a
{
    color: var(--blue);
}
.navigation ul li a .icon
{
    position: relative;
    display: block;
    min-width: 60px;
    height: 60px;
    line-height: 70px;
    text-align: center;
}
.navigation ul li a .icon ion-icon
{
    font-size: 1.75em;
}
.navigation ul li a .title
{
    position: relative;
    display: block;
    padding: 0 10px;
    height: 60px;
    line-height: 60px;
    text-align: start;
    white-space: nowrap;
}

/*curve outs*/
.navigation ul li:hover a::before,
.navigation ul li.hovered a::before
{
    content: '';
    position: absolute;
    right: 0;
    top: -50px;
    width: 50px;
    height: 50px;
    background: transparent;
    border-radius: 50%;
    box-shadow: 35px 35px 0 10px var(--white);
    pointer-events: none;
}
.navigation ul li:hover a::after,
.navigation ul li.hovered a::after
{
    content: '';
    position: absolute;
    right: 0;
    bottom: -50px;
    width: 50px;
    height: 50px;
    background: transparent;
    border-radius: 50%;
    box-shadow: 35px -35px 0 10px var(--white);
    pointer-events: none;
}


.main
{
    position: absolute;
    width: calc(100% - 300px);
    left: 300px;
    min-height: 100vh;
    background: var(--white);
    transition: 0.5s;
}

.topbar
{
    width: 100%;
    height: 60px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 10px;
}
.toggle
{
    position: relative;
    width: 60px;
    height: 60px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 2.5em;
    cursor: pointer;
}
.search
{
    position: relative;
    width: 400px;
    margin: 0 10px;
}
.search label
{
    position: relative;
    width: 100%;
}
.search label input
{
    width: 100%;
    height: 40px;
    border-radius: 40px; 
    padding: 5px 20px;
    padding-left: 35px;
    font-size: 18px;
    outline: none;
    border: 1px solid var(--black2);
}
.search label ion-icon
{
    position: absolute;
    top: 0;
    left: 10px;
    font-size: 1.2em;
}
    <!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Responsive Admin Dashboard | Redesign</title>
    <link rel="stylesheet" type="text/css" href="style.css">
</head>
<body>
    <div class="container">
        <div class="navigation">
            <ul>
                <li>
                    <a href="#">
                        <span class="icon"><ion-icon name="logo-apple"></ion-icon></span>
                        <span class="title">Brand Name</span>
                    </a>
                </li>
                <li>
                    <a href="#">
                        <span class="icon"><ion-icon name="home-outline"></ion-icon></span>
                        <span class="title">Dashboard</span>
                    </a>
                </li>
                <li>
                    <a href="#">
                        <span class="icon"><ion-icon name="person-outline"></ion-icon></span>
                        <span class="title">Customers</span>
                    </a>
                </li>
                <li>
                    <a href="#">
                        <span class="icon"><ion-icon name="chatbubble-outline"></ion-icon></span>
                        <span class="title">Message</span>
                    </a>
                </li>
                <li>
                    <a href="#">
                        <span class="icon"><ion-icon name="help-outline"></ion-icon></span>
                        <span class="title">Help</span>
                    </a>
                </li>
                <li>
                    <a href="#">
                        <span class="icon"><ion-icon name="settings-outline"></ion-icon></span>
                        <span class="title">Setting</span>
                    </a>
                </li>
                <li>
                    <a href="#">
                        <span class="icon"><ion-icon name="lock-closed-outline"></ion-icon></span>
                        <span class="title">Password</span>
                    </a>
                </li>
                <li>
                    <a href="#">
                        <span class="icon"><ion-icon name="log-out-outline"></ion-icon></span>
                        <span class="title">Sign Out</span>
                    </a>
                </li>
            </ul>
        </div>
        <!-- mai n-->
        <div class="main">
            <div class="topbar">
                <div class="toggle">
                    <ion-icon name="menu-outline"></ion-icon>
                </div>
                <!-- search -->
                <div class="search">
                    <label>
                        <input type="text" placeholder="Search here">
                        <ion-icon name="search-outline"></ion-icon>
                    </label> 
                </div>
                <!-- userImg -->
                <div class="user">
                    <img src="user.jpg" alt="">
                </div>
            </div>
        </div>
    </div>
    <script type="module" src="https://unpkg.com/[email protected]/dist/ionicons/ionicons.esm.js"></script>
    <script nomodule src="https://unpkg.com/[email protected]/dist/ionicons/ionicons.js"></script>

    <script>
        //ad hovered class in selected list item
        let list = document.querySelectorAll('.navigation li');
        function activeLink(){
            list.forEach((item) =>
            item.classList.remove('hovered'));
            this.classList.add('hovered');
        }
        list.forEach((item) =>
        item.addEventListener('mouseover',activeLink));
    </script>
</body>
</html>