html, body {
    width: 100%;
    height: 100%;
}

canvas {
    display: block;
    vertical-align: bottom;
}

.count-particles {
    background: #000022;
    position: absolute;
    top: 48px;
    left: 0;
    width: 80px;
    color: #13E8E9;
    font-size: .8em;
    text-align: left;
    text-indent: 4px;
    line-height: 14px;
    padding-bottom: 2px;
    font-family: Helvetica, Arial, sans-serif;
    font-weight: bold;
}

.js-count-particles {
    font-size: 1.1em;
}

#stats,
.count-particles {
    -webkit-user-select: none;
    margin-top: 5px;
    margin-left: 5px;
}

#stats {
    border-radius: 3px 3px 0 0;
    overflow: hidden;
}

.count-particles {
    border-radius: 0 0 3px 3px;
}


#particles-js {
    width: 100%;
    height: 100%;
    position: relative;
    background-image: url(../image/bg.jpg);
    background-position: 50% 50%;
    background-size: cover;
    background-repeat: no-repeat;
    margin-left: auto;
    margin-right: auto;
}

.sk-rotating-plane {
    display: none;
    width: 80px;
    height: 80px;
    margin: auto;
    background-color: white;
    -webkit-animation: sk-rotating-plane 1.2s infinite ease-in-out;
    animation: sk-rotating-plane 1.2s infinite ease-in-out;
    z-index: 1;
    position: absolute;
    top: 50%;
    left: 50%;
    margin-left: -40px;
    margin-top: -80px;
}

.sk-rotating-plane.active {
    display: block;
}

@keyframes sk-rotating-plane {
    0% {
        -webkit-transform: perspective(120px) rotateX(0deg) rotateY(0deg);
        transform: perspective(120px) rotateX(0deg) rotateY(0deg);
    }
    50% {
        -webkit-transform: perspective(120px) rotateX(-180.1deg) rotateY(0deg);
        transform: perspective(120px) rotateX(-180.1deg) rotateY(0deg);
    }
    100% {
        -webkit-transform: perspective(120px) rotateX(-180deg) rotateY(-179.9deg);
        transform: perspective(120px) rotateX(-180deg) rotateY(-179.9deg);
    }
}

@keyframes login-small {
    0% {
        transform: scale(1);
        -moz-transform: scale(1); /* Firefox 4 */
        -webkit-transform: scale(1); /* Safari 和 Chrome */
        -o-transform: scale(1); /* Opera */
        -ms-transform: scale(1); /* IE 9 */
    }
    100% {
        transform: scale(0.2);
        -moz-transform: scale(0.1); /* Firefox 4 */
        -webkit-transform: scale(0.2); /* Safari 和 Chrome */
        -o-transform: scale(0.1); /* Opera */
        -ms-transform: scale(0.1); /* IE 9 */
    }
}

.login {
    z-index: 2;
    position: absolute;
    width: 350px;
    border-radius: 5px;
    height: 400px;
    background: white;
    box-shadow: 0px 0px 5px #333333;
    top: 50%;
    left: 50%;
    margin-top: -220px;
    margin-left: -175px;
    transition: all 1s;
    -moz-transition: all 1s; /* Firefox 4 */
    -webkit-transition: all 1s; /* Safari 和 Chrome */
    -o-transition: all 1s; /* Opera */
}

.login-top {
    font-size: 24px;
    margin-top: 60px;
    padding-left: 40px;
    box-sizing: border-box;
    color: #333333;
    margin-bottom: 50px;
}

.login-center {
    width: 100%;
    box-sizing: border-box;
    padding: 0 40px;
    margin-bottom: 30px;
}

.login-center-img {
    width: 20px;
    height: 20px;
    float: left;
    margin-top: 5px;
}

.login-center-img > img {
    width: 100%;
}

.login-center-input {
    float: left;
    width: 230px;
    margin-left: 15px;
    height: 30px;
    position: relative;
}

.login-center-input input {
    z-index: 2;
    transition: all 0.5s;
    padding-left: 10px;
    color: #333333;
    width: 100%;
    height: 30px;
    border: 0;
    border-bottom: 1px solid #cccccc;
    border-top: 1px solid #ffffff;
    border-left: 1px solid #ffffff;
    border-right: 1px solid #ffffff;
    box-sizing: border-box;
    outline: none;
    position: relative;
}

.login-center-input input:focus {
    border: 1px solid dodgerblue;
}

.login-center-input-text {
    background: white;
    padding: 0 5px;
    position: absolute;
    z-index: 0;
    opacity: 0;
    height: 20px;
    top: 50%;
    margin-top: -10px;
    font-size: 14px;
    left: 5px;
    color: dodgerblue;
    line-height: 20px;
    transition: all 0.5s;
    -moz-transition: all 0.5s; /* Firefox 4 */
    -webkit-transition: all 0.5s; /* Safari 和 Chrome */
    -o-transition: all 0.5s; /* Opera */
}

.login-center-input input:focus ~ .login-center-input-text {
    top: 0;
    z-index: 3;
    opacity: 1;
    margin-top: -15px;
}

.login.active {
    -webkit-animation: login-small 0.8s;
    animation: login-small 0.8s;
    animation-fill-mode: forwards;
    -webkit-animation-fill-mode: forwards
}

.login-button {
    cursor: pointer;
    width: 250px;
    text-align: center;
    height: 40px;
    line-height: 40px;
    background-color: dodgerblue;
    border-radius: 5px;
    margin: 0 auto;
    margin-top: 50px;
    color: white;
}