Gordonmac Dot Com

Mostly a web development blog

CSS navigation with animated underline effect

Posted: March 16th, 2016 | Posted in: CSS, Tutorials

Just part of something I’ve been working on. The requirement was for a simple navigation, but it also had to have something different. I’m really starting to love CSS transforms!

See the Pen Navigation with Animated Underline by Gordon Mackay (@gordonmacdotcom) on CodePen.

The HTML

<nav class="nav--top">
    <ul>
        <li><a href="#">About</a></li>
        <li><a href="#">How it works</a></li>
        <li><a href="#">E-mail me</a></li>
    </ul>
</nav>

The CSS

.nav--top > ul {
    font-family: Arial, Sans-Serif;
    font-size: 22px;
    margin: 0;
    padding: 0;
    list-style: none;
    text-align: center
}

.nav--top > ul > li {
    line-height: normal;
    padding: 0;
    margin: 0 0 1rem
}

@media (min-width: 52em) {
    .nav--top > ul > li {
        margin: 0 0 0 .75rem;
        display: inline-block
    }
}

.nav--top > ul > li a {
    display: inline-block;
    vertical-align: middle;
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
    box-shadow: 0 0 1px transparent;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    -moz-osx-font-smoothing: grayscale;
    position: relative;
    padding: 0 0 .15rem;
    border-bottom: 2px solid #d8d8d8;
    text-decoration: none;
    font-weight: 400;
    color: #787777
}

.nav--top > ul > li a:before {
    content: "";
    position: absolute;
    z-index: -1;
    left: 0;
    right: 100%;
    bottom: -2px;
    background: #368e65;
    height: 2px;
    -webkit-transition-property: right;
    transition-property: right;
    -webkit-transition-duration: 0.3s;
    transition-duration: 0.3s;
    -webkit-transition-timing-function: ease-out;
    transition-timing-function: ease-out
}

.nav--top > ul > li a:hover:before,
.nav--top > ul > li a:focus:before,
.nav--top > ul > li a:active:before,
.nav--top > ul > li.current_page_item a:before {
    right: 0
}

.nav--top > ul > li a:hover,
.nav--top > ul > li a:focus,
.nav--top > ul > li a:active,
.nav--top > ul > li.current_page_item a {
    border-bottom: 2px solid #fff;
    color: #121212
}

Enjoy :)