Pure CSS reaction component with one element

In this post I will share you a pure CSS reaction component that is made from one element. I also built it accessibility in mind. Here's a preview of that.

The HTML

<input type="checkbox" class="reaction" data-reaction="🦄" style="--color:#31d2f7">

For this to work. You must set the data-reaction attribute to whatever the emoji you want. And Change the CSS variable --color to the color of that emoji.

Quick TIP: If you are a Windows 10 user, press the Windows Key + ; to get a list of emojis.

The CSS

Here's the good part

.reaction {
    height: 100px;
    width: 100px;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    border-radius: 50px;
    position: relative;
    background: white;
    outline: none;
    cursor: pointer;
    border: 1px solid transparent;
    -webkit-transition: all 0.2s ease;
    -o-transition: all 0.2s ease;
    transition: all 0.2s ease;
    color: var(--color);
}
.reaction:hover:before {
    -webkit-transform: scale(1);
    -ms-transform: scale(1);
    transform: scale(1);
    opacity: 0.2;
}
.reaction:before {
    content: "";
    pointer-events: none;
    position: absolute;
    top: 0;
    left: 0;
    border-radius: 100px;
    height: 100%;
    width: 100%;
    -webkit-transform: scale(0.6);
    -ms-transform: scale(0.6);
    transform: scale(0.6);
    opacity: 0;
    -webkit-transition: all 0.2s ease;
    -o-transition: all 0.2s ease;
    transition: all 0.2s ease;
    background: #000;
}
.reaction:checked:before {
    background: var(--color);
}
.reaction:checked:focus {
    border-color: var(--color);
}
.reaction:focus {
    border-color: #000;
}
.reaction:after {
    -webkit-filter: grayscale(1);
    filter: grayscale(1);
    content: attr(data-reaction);
    position: absolute;
    top: 50%;
    left: 50%;
    -webkit-transform: translate(-50%, -50%);
    -ms-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
    font-size: 30px;
    -webkit-transition: all 1s ease;
    -o-transition: all 1s ease;
    transition: all 1s ease;
}
.reaction:checked {
    -webkit-filter: none;
    filter: none;
    -webkit-transform: rotate(360deg);
    -ms-transform: rotate(360deg);
    transform: rotate(360deg);
    text-shadow: 0px 10px 20px var(--color);
}
.reaction:checked:after {
    -webkit-transform: translate(-50%, -50%) rotate(-360deg);
    -ms-transform: translate(-50%, -50%) rotate(-360deg);
    transform: translate(-50%, -50%) rotate(-360deg);
    -webkit-filter: none;
    filter: none;
}

OK (200). We're good to go. So, here's a CodePen.

And if you like this post press the button 💖. And send a comment !

INFO: If you can please don't forget to star this framework on Github.