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<div class="frame">
<ul class="tabbar">
<li class="active">
<a href="" class="box">
<div>
<svg>
<use xlink:href="#box">
</svg>
<em></em>
</div>
</a>
</li>
<li>
<a href="" class="home">
<div>
<svg>
<use xlink:href="#home">
</svg>
</div>
</a>
</li>
<li>
<a href="" class="calendar">
<div>
<svg>
<use xlink:href="#calendar">
</svg>
<em></em>
</div>
</a>
</li>
</ul>
</div>
<svg xmlns="http://www.w3.org/2000/svg" style="display: none;">
<symbol xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" id="box">
<path d="M4.2715356,6.86557078 C3.79533783,7.1301251 3.5,7.63205601 3.5,8.1768067 L3.5,15.8231933 C3.5,16.367944 3.79533783,16.8698749 4.2715356,17.1344292 L11.2715356,21.0233181 C11.7245694,21.2750036 12.2754306,21.2750036 12.7284644,21.0233181 L19.7284644,17.1344292 C20.2046622,16.8698749 20.5,16.367944 20.5,15.8231933 L20.5,8.1768067 C20.5,7.63205601 20.2046622,7.1301251 19.7284644,6.86557078 L12.7284644,2.97668189 C12.2754306,2.72499645 11.7245694,2.72499645 11.2715356,2.97668189 L4.2715356,6.86557078 Z"></path>
</symbol>
<symbol xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" id="home">
<path d="M3.66781808,10.0753614 C3.5610739,10.1702451 3.5,10.3062472 3.5,10.4490661 L3.5,20 C3.5,20.8284271 4.17157288,21.5 5,21.5 L19,21.5 C19.8284271,21.5 20.5,20.8284271 20.5,20 L20.5,10.4490661 C20.5,10.3062472 20.4389261,10.1702451 20.3321819,10.0753614 L12.9965458,3.55479593 C12.4282167,3.04961457 11.5717833,3.04961457 11.0034542,3.55479593 L3.66781808,10.0753614 Z"></path>
</symbol>
<symbol xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" id="calendar">
<path d="M5,4.5 C4.17157288,4.5 3.5,5.17157288 3.5,6 L3.5,19 C3.5,19.8284271 4.17157288,20.5 5,20.5 L19,20.5 C19.8284271,20.5 20.5,19.8284271 20.5,19 L20.5,6 C20.5,5.17157288 19.8284271,4.5 19,4.5 L5,4.5 Z"></path>
</symbol>
</svg>
<!-- dribbble -->
<a class="dribbble" href="https://dribbble.com/shots/7030278-Tab-bar-animation" target="_blank"><img src="https://cdn.dribbble.com/assets/dribbble-ball-mark-2bd45f09c2fb58dbbfb44766d5d1d07c5a12972d602ef8b32204d28fa3dda554.svg" alt=""></a>
.tabbar {
--primary: #275EFE;
--background: #fff;
--icon-active: #fff;
--x: 64px;
width: 100%;
margin: 0;
padding: 0 16px;
border-radius: 0 0 28px 28px;
list-style: none;
position: relative;
display: grid;
grid-template-columns: repeat(3, minmax(0, 1fr));
background: var(--background);
&:before,
&:after {
content: '';
position: absolute;
left: 0;
border-radius: 50%;
transform: translateX(var(--x));
}
&:before {
width: 64px;
height: 64px;
margin-left: -32px;
background: var(--primary);
top: -16px;
z-index: 1;
}
&:after {
width: 84px;
height: 84px;
margin-left: -42px;
background: rgba(255, 255, 255, .08);
top: -26px;
}
li {
a {
display: block;
padding: 24px 0;
backface-visibility: hidden;
transition: transform .2s ease;
-webkit-tap-highlight-color: transparent;
div {
--y: 0;
width: 32px;
height: 32px;
margin: 0 auto;
position: relative;
z-index: 1;
backface-visibility: hidden;
transform: translateY(var(--y));
svg {
display: block;
width: 32px;
height: 32px;
fill: rgba(255, 255, 255, 0);
stroke-width: 1px;
stroke: var(--primary);
}
&:before {
--s-x: 1;
--s-y: 1;
content: '';
display: block;
position: absolute;
z-index: 1;
transform: scaleX(var(--s-x)) scaleY(var(--s-y));
}
}
&.box {
div {
&:before {
--s-x: .75;
left: 50%;
margin-left: -1px;
width: 2px;
height: 12px;
bottom: 4px;
border-radius: 1px;
background: var(--primary);
}
em {
--s-x: 1;
--s-y: 1;
display: block;
position: absolute;
top: 50%;
left: 50%;
z-index: 1;
&:before,
&:after {
--r: 0deg;
content: '';
display: block;
height: 2px;
border-radius: 1px;
width: 13px;
background: var(--primary);
position: absolute;
bottom: -1px;
transform: rotateZ(var(--r)) translateY(1px) scaleY(.75);
}
&:before {
--r: 30deg;
right: -1px;
transform-origin: 100% 50%;
}
&:after {
--r: -30deg;
left: -1px;
transform-origin: 0% 50%;
}
}
}
}
&.home {
div {
&:before {
--s-x: .75;
--s-y: .75;
border: 2px solid var(--primary);
border-bottom: 0;
width: 12px;
height: 17px;
border-radius: 2px 2px 0 0;
left: 50%;
bottom: 1px;
margin-left: -6px;
transform: scale(.75);
}
}
}
&.calendar {
div {
&:before {
--s-y: .75;
height: 2px;
width: 22px;
background: var(--primary);
left: 50%;
top: 12px;
margin-left: -11px;
}
em {
display: block;
position: absolute;
top: 3px;
left: 50%;
&:before,
&:after {
content: '';
display: block;
width: 2px;
border-radius: 1px;
height: 7px;
background: var(--primary);
position: absolute;
top: 0;
backface-visibility: hidden;
transform: scaleX(.75);
transition: background .4s ease;
}
&:before {
right: -6px;
}
&:after {
left: -6px;
}
}
}
}
}
&.active {
a {
div {
--y: -24px;
svg {
fill: var(--icon-active);
}
}
&.calendar {
em {
&:before,
&:after {
background: var(--icon-active);
}
}
}
}
}
&:not(.active) {
a {
div {
transition: transform .4s ease;
svg {
transition: fill .4s ease;
}
}
&:active {
transform: scale(.92);
}
}
}
&.move {
a {
div {
animation: icon 1.2s linear forwards;
svg {
animation: svg 1.2s linear forwards;
}
}
&.box {
div {
&:before {
animation: element-far 1.2s linear forwards;
}
em {
animation: element-close 1.2s linear forwards;
}
}
}
&.home {
div {
&:before {
animation: element-close 1.2s linear forwards;
}
}
}
&.calendar {
div {
&:before {
animation: element-close 1.2s linear forwards;
}
em {
animation: calendar-2 1.2s linear forwards;
&:before,
&:after {
animation: calendar-3 1.2s linear forwards;
}
}
}
}
}
}
}
&.move {
&:before {
animation: move 1.2s linear forwards;
}
&:after {
animation: move-after 1.2s linear forwards;
}
}
}
.frame {
width: 320px;
height: 240px;
border-radius: 0 0 28px 28px;
overflow: hidden;
display: flex;
align-items: flex-end;
}
@keyframes move {
10%,
15% {
transform: translate(var(--x), 84px);
}
30% {
transform: translate(var(--x-n), 84px);
}
42%,
70% {
transform: translate(var(--x-n), -16px);
}
85% {
transform: translate(var(--x-n), 4px);
}
100% {
transform: translate(var(--x-n), 0);
}
}
@keyframes move-after {
10%,
15% {
transform: translate(var(--x), 84px) scale(.82);
}
30% {
transform: translate(var(--x-n), 84px) scale(.82);
}
42% {
transform: translate(var(--x-n), -16px) scale(.82);
}
60% {
transform: translate(var(--x-n), -16px) scale(1);
}
70% {
transform: translate(var(--x-n), -16px) scale(1);
}
85% {
transform: translate(var(--x-n), 4px) scale(1);
}
100% {
transform: translate(var(--x-n), 0) scale(1);
}
}
@keyframes icon {
30% {
transform: translateY(0px);
}
40%,
70% {
transform: translateY(-100px);
}
85% {
transform: translateY(-20px);
}
100% {
transform: translateY(-24px);
}
}
@keyframes svg {
30% {
fill: rgba(255, 255, 255, 0);
transform: translateY(0);
}
40% {
fill: rgba(255, 255, 255, 0);
transform: translateY(-36px);
}
70% {
fill: rgba(255, 255, 255, 0);
transform: translateY(-56px);
}
80% {
fill: rgba(255, 255, 255, 0);
}
85% {
fill: var(--icon-active);
transform: translateY(0);
}
100% {
fill: var(--icon-active);
transform: translateY(0);
}
}
@keyframes element-close {
30% {
transform: translateY(0) scaleX(var(--s-x)) scaleY(var(--s-y));
}
40% {
transform: translateY(-16px) scaleX(var(--s-x)) scaleY(var(--s-y));
}
70% {
transform: translateY(-28px) scaleX(var(--s-x)) scaleY(var(--s-y));
}
85% {
transform: translateY(0) scaleX(var(--s-x)) scaleY(var(--s-y));
}
100% {
transform: translateY(0) scaleX(var(--s-x)) scaleY(var(--s-y));
}
}
@keyframes element-far {
30% {
transform: translateY(0) scaleX(var(--s-x)) scaleY(var(--s-y));
}
40% {
transform: translateY(-4px) scaleX(var(--s-x)) scaleY(var(--s-y));
}
70% {
transform: translateY(-12px) scaleX(var(--s-x)) scaleY(var(--s-y));
}
85% {
transform: translateY(0) scaleX(var(--s-x)) scaleY(var(--s-y));
}
100% {
transform: translateY(0) scaleX(var(--s-x)) scaleY(var(--s-y));
}
}
@keyframes calendar-2 {
30% {
transform: translateY(0);
}
40% {
transform: translateY(0px);
}
70% {
transform: translateY(-8px);
}
85% {
transform: translateY(0);
}
100% {
transform: translateY(0);
}
}
@keyframes calendar-3 {
75% {
background: var(--primary);
}
80%,
100% {
background: var(--icon-active);
}
}
html {
box-sizing: border-box;
-webkit-font-smoothing: antialiased;
}
* {
box-sizing: inherit;
&:before,
&:after {
box-sizing: inherit;
}
}
// Center & dribbble
body {
min-height: 100vh;
display: flex;
justify-content: center;
align-items: center;
background: #242836;
.dribbble {
position: fixed;
display: block;
right: 20px;
bottom: 20px;
img {
display: block;
height: 28px;
}
}
}
$('.tabbar li a').on('click', function(e) {
e.preventDefault();
let that = $(this),
li = that.parent(),
ul = li.parent();
if(!ul.hasClass('move') && !li.hasClass('active')) {
ul.children('li').removeClass('active');
ul.css('--x-n', li.position().left + li.outerWidth() / 2 + 'px');
li.addClass('move');
ul.addClass('move');
setTimeout(() => {
ul.removeClass('move');
li.removeClass('move').addClass('active');
ul.css('--x', li.position().left + li.outerWidth() / 2 + 'px');
}, 1200);
}
});
Also see: Tab Triggers