* {
    box-sizing: border-box;
}
body {
    margin: 0;
    padding: 0;
    font: 16px/20px microsft yahei;
    overflow: hidden;
}
.wrap {
    width: 100%;
    height: 500px;
    padding: 40px 0;
    position: relative;
    top: 60px;
    opacity: 0.8;
    background: linear-gradient(to bottom right,#50a3a2,#53e3a6);
    background: -webkit-linear-gradient(to bottom right,#50a3a2,#53e3a6);
}
.container {
    width: 60%;
    margin: 0 auto;
}
.container h1 {
    text-align: center;
    color: #FFFFFF;
    font-weight: 500;
}
.container input,.container .login {
    width: 320px;
    display: block;
    height: 40px;
    border: 0;
    outline: 0;
    padding: 6px 10px;
    line-height: 24px;
    margin: 32px auto;
    -webkit-transition: all 0s ease-in 0.1ms;
    -moz-transition: all 0s ease-in 0.1ms;
    transition: all 0s ease-in 0.1ms;
}
.container .login{
    color: #555;
    background-color: #FFFFFF;
    transition: all .6s;
    font-size: 15px;
    text-align: center;
}
::-webkit-input-placeholder { /* WebKit browsers */
    color: #999;
    font-size: 13px;
}
:-moz-placeholder { /* Mozilla Firefox 4 to 18 */
    color: #999;
    font-size: 13px;
}
::-moz-placeholder { /* Mozilla Firefox 19+ */
    color: #999;
    font-size: 13px;
}
:-ms-input-placeholder { /* Internet Explorer 10+ */
    color: #999;
    font-size: 13px;
}
.container input[type="text"] , .container input[type="password"]  {
    background-color: #FFFFFF;
    font-size: 16px;
    color: #50a3a2;
    transition: all .6s;
}
.container input:focus {
    width: 350px;
}
.container .login:hover {
    cursor: pointer;
    width: 350px;
}
.container p span{
    display: block;
    width: 320px;
    height: 40px;
    margin: 0px auto;
}
.container p span img{
    width: 40%;
    height: 100%;
}

.wrap ul {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -10;
}
.wrap ul li {
    list-style-type: none;
    display: block;
    position: absolute;
    bottom: -120px;
    width: 15px;
    height: 15px;
    z-index: -8;
    background-color:rgba(255, 255, 255, 0.15);
    animotion: square 25s infinite;
    -webkit-animation: square 25s infinite;
}
.wrap ul li:nth-child(1) {
    left: 0;
    animation-duration: 10s;
    -moz-animation-duration: 10s;
    -o-animation-duration: 10s;
    -webkit-animation-duration: 10s;
}
.wrap ul li:nth-child(2) {
    width: 40px;
    height: 40px;
    left: 10%;
    animation-duration: 15s;
    -moz-animation-duration: 15s;
    -o-animation-duration: 15s;
    -webkit-animation-duration: 15s;
}
.wrap ul li:nth-child(3) {
    left: 20%;
    width: 25px;
    height: 25px;
    animation-duration: 12s;
    -moz-animation-duration: 12s;
    -o-animation-duration: 12s;
    -webkit-animation-duration: 12s;
}
.wrap ul li:nth-child(4) {
    width: 50px;
    height: 50px;
    left: 30%;
    -webkit-animation-delay: 3s;
    -moz-animation-delay: 3s;
    -o-animation-delay: 3s;
    animation-delay: 3s;
    animation-duration: 12s;
    -moz-animation-duration: 12s;
    -o-animation-duration: 12s;
    -webkit-animation-duration: 12s;
}
.wrap ul li:nth-child(5) {
    width: 60px;
    height: 60px;
    left: 40%;
    animation-duration: 10s;
    -moz-animation-duration: 10s;
    -o-animation-duration: 10s;
    -webkit-animation-duration: 10s;
}
.wrap ul li:nth-child(6) {
    width: 75px;
    height: 75px;
    left: 50%;
    -webkit-animation-delay: 7s;
    -moz-animation-delay: 7s;
    -o-animation-delay: 7s;
    animation-delay: 7s;
}
.wrap ul li:nth-child(7) {
    left: 60%;
    animation-duration: 8s;
    -moz-animation-duration: 8s;
    -o-animation-duration: 8s;
    -webkit-animation-duration: 8s;
}
.wrap ul li:nth-child(8) {
    width: 90px;
    height: 90px;
    left: 70%;
    -webkit-animation-delay: 4s;
    -moz-animation-delay: 4s;
    -o-animation-delay: 4s;
    animation-delay: 4s;
}
.wrap ul li:nth-child(9) {
    width: 100px;
    height: 100px;
    left: 80%;
    animation-duration: 20s;
    -moz-animation-duration: 20s;
    -o-animation-duration: 20s;
    -webkit-animation-duration: 20s;
}
.wrap ul li:nth-child(10) {
    width: 120px;
    height: 120px;
    left: 90%;
    -webkit-animation-delay: 6s;
    -moz-animation-delay: 6s;
    -o-animation-delay: 6s;
    animation-delay: 6s;
    animation-duration: 30s;
    -moz-animation-duration: 30s;
    -o-animation-duration: 30s;
    -webkit-animation-duration: 30s;
}

@keyframes square {
    0%  {
        -webkit-transform: translateY(0);
        transform: translateY(0)
    }
    100% {
        bottom: 400px;
        transform: rotate(600deg);
        -webit-transform: rotate(600deg);
        -webkit-transform: translateY(-500);
        transform: translateY(-500)
    }
}
@-webkit-keyframes square {
    0%  {
        -webkit-transform: translateY(0);
        transform: translateY(0)
    }
    100% {
        bottom: 400px;
        transform: rotate(600deg);
        -webit-transform: rotate(600deg);
        -webkit-transform: translateY(-500);
        transform: translateY(-500)
    }
}


form{
    position: relative;
    transition: all 1s;
}

.container h1.active{
    line-height: 300px;
    font-size: 65px;
    transition: all 1s;
}