How to use CSS3 to implement input input box animation style library

The content of this article is about how to use CSS3 to implement the input box animation style library. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.

Enjoy a beautiful input box animation style library - Text input love, implemented using pure CSS3.

Click each input box to use different animation effects, always display the label, and display the placeholder text.

html code:

<div class="row">
 <p>Click every input.</p>
</div>
<div class="row">
 <span>
   <input class="basic-slide" id="name" type="text" placeholder="Your best name" /><label for="name">Name</label>
 </span>
 <span>
   <input class="basic-slide" id="email" type="text" placeholder="Your favorite email" /><label for="email">Email</label>
 </span>
 <span>
   <input class="basic-slide" id="phone" type="text" placeholder="You can trust us" /><label for="phone">Phone</label>
 </span>
</div>
<div class="row">
 <span>
   <input class="clean-slide" id="age" type="text" placeholder="Go for the high score!" /><label for="age">Age</label>
 </span>
 <span>
   <input class="clean-slide" id="height" type="text" placeholder="Heels count" /><label for="height">Height</label>
 </span>
 <span>
   <input class="clean-slide" id="weight" type="text" placeholder="Go ahead and lie" /><label for="weight">Weight</label>
 </span>
</div>
<div class="row">
 <span>
   <input class="gate" id="class" type="text" placeholder="Wizard!" /><label for="class">Class</label>
 </span>
 <span>
   <input class="gate" id="element" type="text" placeholder="Five to choose from" /><label for="element">Element</label>
 </span>
 <span>
   <input class="gate" id="move" type="text" placeholder="Secret book attack!" /><label for="move">Move</label>
 </span>
</div>
<div class="row">
 <span>
   <input class="skinny" id="english" type="text" placeholder="Do you speak it?" /><label for="english">English</label>
 </span>
 <span>
   <input class="skinny" id="burger" type="text" placeholder="A Royale with cheese?" /><label for="burger">Burger</label>
 </span>
 <span>
   <input class="skinny" id="wallet" type="text" placeholder="Bad Mother****er" /><label for="wallet">Wallet</label>
 </span>
</div>
<div class="row">
 <span>
   <input class="slide-up" id="card" type="text" placeholder="Fund me!" /><label for="card">Credit Card</label>
 </span>
 <span>
   <input class="slide-up" id="expires" type="text" placeholder="Month Day, Year" /><label for="expires">Expires</label>
 </span>
 <span>
   <input class="slide-up" id="security" type="text" placeholder="Public" /><label for="security">Security Code</label>
 </span>
</div>
<div class="row">
 <span>
   <input class="card-slide" id="knock" type="text" placeholder="Who&#39;s there?" /><label for="knock">Knock knock</label>
 </span>
 <span>
   <input class="card-slide" id="max" type="text" placeholder="Max who?" /><label for="max">Max</label>
 </span>
 <span>
   <input class="card-slide" id="out" type="text" placeholder="Sunuva..." /><label for="out">Maxed out card ;)</label>
 </span>
</div>
<div class="row">
 <span>
   <input class="swing" id="artist" type="text" placeholder="BO$$" /><label for="artist">Artist</label>
 </span>
 <span>
   <input class="swing" id="song" type="text" placeholder="I don&#39;t give a ****" /><label for="song">Song</label>
 </span>
 <span>
   <input class="swing" id="eyes" type="text" placeholder="Crazy" /><label for="eyes">Eyes</label>
 </span>
</div>
<div class="row">
 <span>
   <input class="balloon" id="state" type="text" placeholder="Liquid, solid, gaseous..." /><label for="state">State</label>
 </span>
 <span>
   <input class="balloon" id="planet" type="text" placeholder="Probably Earth" /><label for="planet">Planet</label>
 </span>
 <span>
   <input class="balloon" id="galaxy" type="text" placeholder="Milky Way?" /><label for="galaxy">Galaxy</label>
 </span>
</div>

css code:

@import "compass/css3";
 
@import url(https://fonts.googleapis.com/css?family=Open+Sans:400,700,600,300,800);
 
* {
 box-sizing: border-box;
}
html,
body {
 overflow-x: hidden;
 font-family: "Open Sans", sans-serif;
 font-weight: 300;
 color: #fff;
 background: #efefef;
}
@mixin epic-sides() { // https://codepen.io/MichaelArestad/pen/qltuk
   position: relative;
   z-index: 1;
 
   &:before {
       position: absolute;
       content: "";
       display: block;
       top: 0;
       left: -5000px;
       height: 100%;
       width: 15000px;
       z-index: -1;
       @content;
   }
}
.row {
 max-width: 800px;
 margin: 0 auto;
 padding: 60px 30px;
 background: #032429;
 @include epic-sides() {background: inherit;}
 text-align: center;
 
 &:first-child {
   padding: 40px 30px;
 }
 &:nth-child(2),
 &:nth-child(8),
 &:nth-child(10){
   background: #134A46;
 }
 &:nth-child(3),
 &:nth-child(7) {
   background: #377D6A;
 }
 &:nth-child(4),
 &:nth-child(6) {
   background: #7AB893;
 }
 &:nth-child(5) {
   background: #B2E3AF;
 }
 
 span {
   position: relative;
   display: inline-block;
   margin: 30px 10px;
 }
}
.basic-slide {
 display: inline-block;
 width: 215px;
 padding: 10px 0 10px 15px;
 font-family: "Open Sans", sans;
 font-weight: 400;
 color: #377D6A;
 background: #efefef;
 border: 0;
 border-radius: 3px;
 outline: 0;
 text-indent: 70px; // Arbitrary.
 transition: all .3s ease-in-out;
 
 &::-webkit-input-placeholder {
   color: #efefef;
   text-indent: 0;
   font-weight: 300;
 }
 
 + label {
   display: inline-block;
   position: absolute;
   top: 0;
   left: 0;
   padding: 10px 15px;
   text-shadow: 0 1px 0 rgba(19,74,70,.4);
   background: #7AB893;
   transition: all .3s ease-in-out;
   border-top-left-radius: 3px;
   border-bottom-left-radius: 3px;
 }
}
.basic-slide:focus,
.basic-slide:active {
 color: #377D6A;
 text-indent: 0;
 background: #fff;
 border-top-left-radius: 0;
 border-bottom-left-radius: 0;
 
 &::-webkit-input-placeholder {
   color: #aaa;
 }
 + label {
   transform: translateX(-100%);
 }
}
.clean-slide {
 position: relative;
 display: inline-block;
 width: 215px;
 padding: 10px 0 10px 15px;
 font-family: "Open Sans", sans;
 font-weight: 400;
 color: #377D6A;
 background: #efefef;
 border: 0;
 border-radius: 3px;
 outline: 0;
 text-indent: 60px; // Arbitrary.
 transition: all .3s ease-in-out;
 
 &::-webkit-input-placeholder {
   color: #efefef;
   text-indent: 0;
   font-weight: 300;
 }
 
 + label {
   display: inline-block;
   position: absolute;
   transform: translateX(0);
   top: 0;
   left: 0;
   bottom: 0;
   padding: 13px 15px;
   font-size: 11px;
   font-weight: 700;
   text-transform: uppercase;
   color: #032429;
   text-align: left;
   text-shadow: 0 1px 0 rgba(255,255,255,.4);
   transition: all .3s ease-in-out, color .3s ease-out;
   border-top-left-radius: 3px;
   border-bottom-left-radius: 3px;
   overflow: hidden;
   
   &:after {
     content: "";
     position: absolute;
     top: 0;
     right: 100%;
     bottom: 0;
     width: 100%;
     background: #7AB893;
     z-index: -1;
     transform: translate(0);
     transition: all .3s ease-in-out;
     border-top-left-radius: 3px;
     border-bottom-left-radius: 3px;
   }
 }
}
.clean-slide:focus,
.clean-slide:active {
 color: #377D6A;
 text-indent: 0;
 background: #fff;
 border-top-left-radius: 0;
 border-bottom-left-radius: 0;
 
 &::-webkit-input-placeholder {
   color: #aaa;
 }
 + label {
   color: #fff;
   text-shadow: 0 1px 0 rgba(19,74,70,.4);
   transform: translateX(-100%);
   
   &:after {
     transform: translate(100%);
   }
 }
}
.gate {
 display: inline-block;
 width: 215px;
 padding: 10px 0 10px 15px;
 font-family: "Open Sans", sans;
 font-weight: 400;
 color: #377D6A;
 background: #efefef;
 border: 0;
 border-radius: 3px;
 outline: 0;
 text-indent: 65px; // Arbitrary.
 transition: all .3s ease-in-out;
 
 &::-webkit-input-placeholder {
   color: #efefef;
   text-indent: 0;
   font-weight: 300;
 }
 
 + label {
   display: inline-block;
   position: absolute;
   top: 0;
   left: 0;
   padding: 10px 15px;
   text-shadow: 0 1px 0 rgba(19,74,70,.4);
   background: #7AB893;
   transition: all .4s ease-in-out;
   border-top-left-radius: 3px;
   border-bottom-left-radius: 3px;
   transform-origin: left bottom;
   z-index: 99;
   
   &:before,
   &:after {
     content: "";
     position: absolute;
     top: 0;
     right: 0;
     bottom: 0;
     left: 0;
     border-radius: 3px;
     background: #377D6A;
     transform-origin: left bottom;
     transition: all .4s ease-in-out;
     pointer-events: none;
     z-index: -1;
   }
   &:before {
     background: rgba(3,36,41,.2);
     z-index: -2;
     right: 20%;
   }
 }
}
span:nth-child(2) .gate {
 text-indent: 85px;
}
span:nth-child(2) .gate:focus,
span:nth-child(2) .gate:active{
 text-indent: 0;
}
.gate:focus,
.gate:active {
 color: #377D6A;
 text-indent: 0;
 background: #fff;
 border-top-right-radius: 3px;
 border-bottom-right-radius: 3px;
 
 &::-webkit-input-placeholder {
   color: #aaa;
 }
 + label {
   transform: rotate(-66deg);
   border-radius: 3px;
   
   &:before {
     transform: rotate(10deg);
   }
 }
}
.skinny {
 display: inline-block;
 width: 215px;
 padding: 10px 0 10px 15px;
 font-family: "Open Sans", sans;
 font-weight: 400;
 color: #377D6A;
 background: #efefef;
 border: 0;
 border-radius: 3px;
 outline: 0;
 text-indent: 75px; // Arbitrary.
 transition: all .3s ease-in-out;
 
 &::-webkit-input-placeholder {
   color: #efefef;
   text-indent: 0;
   font-weight: 300;
 }
 
 + label {
   display: inline-block;
   position: absolute;
   transform: translateX(0);
   top: 0;
   left: 0;
   padding: 10px 15px;
   text-shadow: 0 1px 0 rgba(19,74,70,.4);
   transition: all .3s ease-in-out;
   border-top-left-radius: 3px;
   border-bottom-left-radius: 3px;
   overflow: hidden;
 
   &:before,
   &:after {
     content: "";
     position: absolute;
     right: 0;
     left: 0;
     z-index: -1;
     transition: all .3s ease-in-out;
   }
   &:before {
     // Skinny bit here
     top: 5px;
     bottom: 5px;
     background: #377D6A; // change this to #134A46
     border-top-left-radius: 3px;
     border-bottom-left-radius: 3px;
   }
   &:after {
     top: 0;
     bottom: 0;
     background: #377D6A;
   }
 }
}
.skinny:focus,
.skinny:active {
 color: #377D6A;
 text-indent: 0;
 background: #fff;
 
 &::-webkit-input-placeholder {
   color: #aaa;
 }
 + label {
   transform: translateX(-100%);
   
   &:after {
     transform: translateX(100%);
   }
 }
}
.slide-up {
 display: inline-block;
 width: 215px;
 padding: 10px 0 10px 15px;
 font-family: "Open Sans", sans;
 font-weight: 400;
 color: #377D6A;
 background: #efefef;
 border: 0;
 border-radius: 3px;
 outline: 0;
 text-indent: 80px; // Arbitrary.
 transition: all .3s ease-in-out;
 
 &::-webkit-input-placeholder {
   color: #efefef;
   text-indent: 0;
   font-weight: 300;
 }
 
 + label {
   display: inline-block;
   position: absolute;
   transform: translateX(0);
   top: 0;
   left: 0;
   padding: 10px 15px;
   text-shadow: 0 1px 0 rgba(19,74,70,.4);
   transition: all .3s ease-in-out;
   border-top-left-radius: 3px;
   border-bottom-left-radius: 3px;
   overflow: hidden;
 
   &:before,
   &:after {
     content: "";
     position: absolute;
     right: 0;
     left: 0;
     z-index: -1;
     transition: all .3s ease-in-out;
   }
   &:before {
     // Skinny bit here
     top: 6px;
     left: 5px;
     right: 5px;
     bottom: 6px;
     background: #377D6A; // change this to #134A46
   }
   &:after {
     top: 0;
     bottom: 0;
     background: #377D6A;
   }
 }
}
span:nth-child(1) .slide-up {
 text-indent: 105px;
}
span:nth-child(3) .slide-up {
 text-indent: 125px;
}
span:nth-child(1) .slide-up:focus,
span:nth-child(1) .slide-up:active,
span:nth-child(3) .slide-up:focus,
span:nth-child(3) .slide-up:active {
 text-indent: 0;
}
.slide-up:focus,
.slide-up:active {
 color: #377D6A;
 text-indent: 0;
 background: #fff;
 
 &::-webkit-input-placeholder {
   color: #aaa;
 }
 + label {
   transform: translateY(-100%);
 
   &:before {
     border-radius: 5px;
   }
   &:after {
     transform: translateY(100%);
   }
 }
}
.card-slide {
 display: inline-block;
 width: 215px;
 padding: 10px 0 10px 15px;
 font-family: "Open Sans", sans;
 font-weight: 400;
 color: #377D6A;
 background: #efefef;
 border: 0;
 border-radius: 3px;
 outline: 0;
 text-indent: 115px; // Arbitrary.
 transition: all .3s ease-in-out;
 
 &::-webkit-input-placeholder {
   color: #efefef;
   text-indent: 0;
   font-weight: 300;
 }
 
 + label {
   display: block;
   position: absolute;
   top: 0;
   left: 0;
   padding: 10px 15px;
   text-shadow: 0 1px 0 rgba(19,74,70,.4);
   background: #7AB893;
   transition: all .3s ease-in-out;
   border-top-left-radius: 3px;
   border-bottom-left-radius: 3px;
   transform-origin: right center;
   transform: perspective(300px) scaleX(1) rotateY(0deg);
 }
}
span:nth-child(2) .card-slide {
 text-indent: 55px;
}
span:nth-child(3) .card-slide {
 text-indent: 150px;
}
span:nth-child(2) .card-slide:focus,
span:nth-child(2) .card-slide:active,
span:nth-child(3) .card-slide:focus,
span:nth-child(3) .card-slide:active {
 text-indent: 0;
}
.card-slide:focus,
.card-slide:active {
 color: #377D6A;
 text-indent: 0;
 background: #fff;
 border-top-left-radius: 0;
 border-bottom-left-radius: 0;
 
 &::-webkit-input-placeholder {
   color: #aaa;
 }
 + label {
   transform: perspective(600px) translateX(-100%) rotateY(80deg);
 }
}
.swing {
 display: inline-block;
 width: 215px;
 padding: 10px 0 10px 15px;
 font-family: "Open Sans", sans;
 font-weight: 400;
 color: #377D6A;
 background: #efefef;
 border: 0;
 border-radius: 3px;
 outline: 0;
 text-indent: 60px; // Arbitrary.
 transition: all .3s ease-in-out;
 
 &::-webkit-input-placeholder {
   color: #efefef;
   text-indent: 0;
   font-weight: 300;
 }
 
 + label {
   display: inline-block;
   position: absolute;
   top: 0;
   left: 0;
   padding: 10px 15px;
   text-shadow: 0 1px 0 rgba(19,74,70,.4);
   background: #7AB893;
   border-top-left-radius: 3px;
   border-bottom-left-radius: 3px;
   transform-origin: 2px 2px;
   transform: rotate(0);
   // There should be a better way
   animation: swing-back .4s 1 ease-in-out;
 }
}
@keyframes swing {
 0% {
   transform: rotate(0);
 }
 20% {
   transform: rotate(116deg);
 }
 40% {
   transform: rotate(60deg);
 }
 60% {
   transform: rotate(98deg);
 }
 80% {
   transform: rotate(76deg);
 }
 100% {
   transform: rotate(82deg);
 }
}
@keyframes swing-back {
 0% {
   transform: rotate(82deg);
 }
 100% {
   transform: rotate(0);
 }
}
.swing:focus,
.swing:active {
 color: #377D6A;
 text-indent: 0;
 background: #fff;
 border-top-left-radius: 0;
 border-bottom-left-radius: 0;
 
 &::-webkit-input-placeholder {
   color: #aaa;
 }
 + label {
   animation: swing 1.4s 1 ease-in-out;
   transform: rotate(82deg);
 }
}
.balloon {
 // As suggested by https://twitter.com/dbox/status/365888496486985728
 display: inline-block;
 width: 215px;
 padding: 10px 0 10px 15px;
 font-family: "Open Sans", sans;
 font-weight: 400;
 color: #377D6A;
 background: #efefef;
 border: 0;
 border-radius: 3px;
 outline: 0;
 text-indent: 60px; // Arbitrary.
 transition: all .3s ease-in-out;
 
 &::-webkit-input-placeholder {
   color: #efefef;
   text-indent: 0;
   font-weight: 300;
 }
 
 + label {
   display: inline-block;
   position: absolute;
   top: 8px;
   left: 0;
   bottom: 8px;
   padding: 5px 15px;
   color: #032429;
   font-size: 11px;
   font-weight: 700;
   text-transform: uppercase;
   text-shadow: 0 1px 0 rgba(19,74,70,0);
   transition: all .3s ease-in-out;
   border-radius: 3px;
   background: rgba(122,184,147,0);
   
   &:after {
     position: absolute;
     content: "";
     width: 0;
     height: 0;
     top: 100%;
     left: 50%;
     margin-left: -3px;
     border-left: 3px solid transparent;
     border-right: 3px solid transparent;
     border-top: 3px solid rgba(122,184,147,0);
     transition: all .3s ease-in-out;
   }
 }
}
.balloon:focus,
.balloon:active {
 color: #377D6A;
 text-indent: 0;
 background: #fff;
 
 &::-webkit-input-placeholder {
   color: #aaa;
 }
 + label {
   color: #fff;
   text-shadow: 0 1px 0 rgba(19,74,70,.4);
   background: rgba(122,184,147,1);
   transform: translateY(-40px);
   
   &:after {
     border-top: 4px solid rgba(122,184,147,1);
   }
 }
}

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