html, body {
    height: 100%;
}

body {
    background: #283593;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto;
}

#signin {
    width: 100%;
    height: 100%;
    background: #3F51B5;
    box-shadow: 0 0 64px rgba(0,0,0,0.5);
    padding: 40px 100px 100px 100px;
    position: relative;
    overflow: hidden;
}

    #signin .error-message {
        color: ghostwhite;
        font-size: 1.3em;
    }

        #signin .error-message ul {
            list-style: none;
            margin-left: 0;
            padding-left: 0;
        }

        #signin .error-message li {
            padding-left: 1em;
            text-indent: -1em;
        }

            #signin .error-message li:before {
                content: "!";
                color: darkred;
                font-size: 2em;
                font-weight: bold;
                padding-right: 5px;
            }

    #signin img.partrack-logo {
        display: block;
        margin-left: auto;
        margin-right: auto;
        width: 60vmin;
    }

    #signin img.custom-company-logo {
        display: block;
        margin-left: auto;
        margin-right: auto;
        width: 40vmin;
        bottom: 1vmin;
        position: relative;
    }

    #signin form {
        padding-top: 5vh;
        width: 50%;
        margin-left: auto;
        margin-right: auto;
    }

    #signin .form-title {
        font: 500 24px/1 'Roboto',sans-serif;
        color: #EBEBEB;
        text-align: center;
        margin: 35px 0;
    }

    #signin .input-field {
        position: relative;
        height: 50px;
        margin: 35px 0;
        transition: all 300ms;
    }

        #signin .input-field i {
            position: absolute;
            bottom: 28px;
            left: 15px;
            color: #BBBBBB;
            height: 0;
            visibility: hidden;
            font-size: 100%;
            transition: height 250ms;
        }

        #signin .input-field label {
            width: 100%;
            /*height: 100%;*/
            position: absolute;
            margin-top: 20px;
            left: 4px;
            font: 400 16px/1 'Roboto',sans-serif;
            color: #FFF;
            opacity: 1;
            transition: all 300ms;
        }

        #signin .input-field input {
            width: 100%;
            height: 4px;
            font: 500 16px/1 'Roboto',sans-serif;
            padding: 0 20px 0 50px;
            border: none;
            box-shadow: 0 10px 10px rgba(0,0,0,0.25);
            color: #606060;
            border-radius: 6px;
            outline: 0;
            overflow: hidden;
            position: absolute;
            bottom: 0;
            left: 0;
            transition: all 300ms;
        }

    #signin .forgot-pw {
        font: 600 14px/1 'Roboto',sans-serif;
        color: #2E3C89;
        text-decoration: none;
        float: right;
        margin: 0 0 25px 0;
        display: block;
    }

    #signin button.login {
        min-height: 60px;
        font: 500 24px/1 'Roboto',sans-serif;
        width: 100%;
        padding: 20px;
        display: block;
        background: #324192;
        color: #FFF;
        border: none;
        outline: 0;
        cursor: pointer;
        position: absolute;
        left: 0;
        bottom: 0;
        transition: all ease-in-out .3s;
    }

        #signin button.login:hover {
            background: #FFF;
            color: #324192;
            font-weight: bold;
        }

    #signin .check {
        width: 100%;
        height: 100%;
        background: #324192;
        position: absolute;
        top: 100%;
        left: 0;
        text-align: center;
        visibility: hidden;
        transition: all 1s;
    }

        #signin .check.in {
            visibility: visible;
            top: 0;
        }

        #signin .check i {
            color: #FFF;
            font-size: 200px;
            line-height: 2.6;
        }

    #signin .input-field input:focus {
        color: #333;
    }

    #signin .input-field input:focus, #signin .input-field input.not-empty {
        height: auto;
        padding: 14px 20px 14px 50px;
    }

        #signin .input-field input:focus + i, #signin .input-field input.not-empty + i {
            font-size: 24px;
            bottom: 26px;
            height: 10px;
            visibility: visible;
        }

            #signin .input-field input:focus + i + label, #signin .input-field input.not-empty + i + label {
                font-size: 12px;
                margin-top: -15px;
                opacity: 0.7;
                animation: label 300ms 1;
            }

@keyframes label {
    0% {
        margin-top: -15px;
    }

    50% {
        margin-top: -25px;
    }

    100% {
        margin-top: -15px;
    }
}

#gif {
    width: 50%;
}

    #gif a img {
        max-width: 100%;
        box-shadow: 0 0 64px rgba(0,0,0,0.5);
    }