html,
body {
    background: #060709;
    text-align: center;
    margin: 0;
    padding: 0;
}

body {
    opacity: 0;
    -webkit-transition: .6s ease opacity;
    -moz-transition: .6s ease opacity;
    -ms-transition: .6s ease opacity;
    transition: .6s ease opacity;
}

body.is-ready {
    opacity: 1;
}

.bg {
    vertical-align: top;
}

.bg-flash {
    position: absolute;
}

.flash {
    position: relative;
}

.header {
    background: rgba(0, 0, 0, 0.5);
    height: 80px;
    width: 100%;
    position: absolute;
    z-index: 1;
}

.header-content {
    width: 1040px;
    height: 100%;
    margin: auto;
}

.header-content img {
    position: relative;
    top: 20px;
    float: left;
}

.work-btn {
    position: relative;
    top: 100px;
    background: url(images/btn_off.png) no-repeat 0 0;
}

.work-btn:hover {
    background: url(images/btn_on.png) no-repeat 0 0;
}

.work-usui {
    margin-top: -30px;
}

.btn-submit {
    position: absolute;
    top: 223px;
    left: 561px;
    width: 152px;
    height: 152px;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    -webkit-transition: .1s ease all;
    -moz-transition: .1s ease all;
    -ms-transition: .1s ease all;
    transition: .1s ease all;
}

.btn-submit:hover {
    background: white;
    opacity: .1;
    box-shadow: 0 0 10px 0 rgb(255, 255, 255), 0 0 20px 0 rgb(255, 255, 255);
}

.sns {
    margin: 30px 0 50px 30px;
}

.sns > * {
    vertical-align: bottom;
    margin: 0 10px;
}

.footer {
    margin: 50px 0 0;
    color: rgb(255, 255, 255);
}

.footer__buttons {
}

.footer__buttons li {
    display: inline-block;
    margin: 70px 70px;
}

.footer__buttons li:first-child {
    margin-left: 30px;
}

.copyright {
    font-size: 10px;
    margin: 10px;
}