html,
body {
    height: 100%;
}

body {
    background: #ed0000;
    display: flex;
    justify-content: center;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

#signin {
    width: 40%;
    background: #FF7575;
    margin: 100px 50px;
    box-shadow: 0 0 64px rgba(0, 0, 0, 0.5);
    padding: 100px;
    position: relative;
    overflow: hidden;
}

#signin .form-title {
    font: 500 28px/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: calc(100% - 70px);
    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 16px/1 'Roboto', sans-serif;
    width: 100%;
    padding: 20px;
    display: block;
    background: #E65353;
    color: #FFF;
    border: none;
    outline: 0;
    cursor: pointer;
    position: absolute;
    left: 0;
    bottom: 0;
}

#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: 64px;
    line-height: 7.4;
}

#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);
}