html, body {
    font-family: '微软雅黑', '宋体', '黑体', 'Arial', sans-serif;
    height: 100%;
    display: block;
}

.menu {
    filter: url("#shadowed-goo");
}

.menu-item, .menu-open-button {
    background: #ff4081;
    border-radius: 100%;
    width: 50px;
    height: 50px;
    position: absolute;
    color: white;
    text-align: center;
    line-height: 50px;
    transform: translate3d(0, 0, 0);
    transition: transform ease-out 200ms;
}

.menu-open {
    display: none;
}

.hamburger {
    width: 20px;
    height: 2px;
    background: white;
    display: block;
    position: absolute;
    top: 50%;
    left: 50%;
    margin-left: -10px;
    margin-top: -1.5px;
    transition: transform 200ms;
}

.hamburger-1 {
    transform: translate3d(0, -8px, 0);
}

.hamburger-2 {
    transform: translate3d(0, 0, 0);
}

.hamburger-3 {
    transform: translate3d(0, 8px, 0);
}

.menu-open:checked + .menu-open-button .hamburger-1 {
    transform: translate3d(0, 0, 0) rotate(45deg);
}
.menu-open:checked + .menu-open-button .hamburger-2 {
    transform: translate3d(0, 0, 0) scale(0.1, 1);
}
.menu-open:checked + .menu-open-button .hamburger-3 {
    transform: translate3d(0, 0, 0) rotate(-45deg);
}

.menu {
    position: absolute;
    width: 50px;
    height: 50px;
    box-sizing: border-box;
    font-size: 20px;
    top: 30px;
    right: 30px;
}

.menu-item { outline: none; text-decoration: none; color: #fff; font-size: 14px; }

.menu-item:hover {
    background: white;
    color: #ff4081;
}
.menu-item:nth-child(3) {
    transition-duration: 70ms;
}
.menu-item:nth-child(4) {
    transition-duration: 130ms;
}
.menu-item:nth-child(5) {
    transition-duration: 190ms;
}
.menu-item:nth-child(6) {
    transition-duration: 250ms;
}
.menu-item:nth-child(7) {
    transition-duration: 310ms;
}

.menu-open-button {
    z-index: 2;
    transition-timing-function: cubic-bezier(0.175, 0.885, 0.32, 1.275);
    transition-duration: 400ms;
    transform: scale(1.1, 1.1) translate3d(0, 0, 0);
    cursor: pointer;
}

.menu-open-button:hover {
    transform: scale(1.2, 1.2) translate3d(0, 0, 0);
}

.menu-open:checked + .menu-open-button {
    transition-timing-function: linear;
    transition-duration: 200ms;
    /*transform: scale(0.8, 0.8) translate3d(0, 0, 0);*/
}

.menu-open:checked ~ .menu-item {
    transition-timing-function: cubic-bezier(0.935, 0, 0.34, 1.33);
}
.menu-open:checked ~ .menu-item:nth-child(3) {
    transition-duration: 320ms;
    transform: translate3d(-170px, 0px, 0);
}
.menu-open:checked ~ .menu-item:nth-child(4) {
    transition-duration: 400ms;
    transform: translate3d(-115px, 0px, 0);
}
.menu-open:checked ~ .menu-item:nth-child(5) {
    transition-duration: 480ms;
    transform: translate3d(-60px, 0px, 0);
}

.header-nav { height: 45px; border-bottom: 1px solid #eee; }
.header-nav a { outline: none; text-decoration: none; }
.header-nav a.go-back { font-size: 24px; margin-left: 10px; color: black; }
.search-box {
    margin: 30px auto;
    width: 80%;
}

.footer {
    text-align: center;
    height: 30px;
    line-height: 30px;
    margin-top: -30px;
    color: white;
}