.open {
    position: fixed;
    top: 0px;
    right: 5px;
    width: 50px;
    height: 50px;
    display: block;
    cursor: pointer;
    -webkit-transition: opacity 0.2s linear;
    transition: opacity 0.2s linear;
}
.open:hover {
    opacity: 0.8;
}
.open span {
    display: block;
    float: left;
    clear: both;
    height: 2px;
    width: 20px;
    border-radius: 40px;
    background-color: #fff;
    position: absolute;
    right: 3px;
    top: 0px;
    overflow: hidden;
    -webkit-transition: all 0.4s ease;
    transition: all 0.4s ease;
}
.open span:nth-child(1) {
    margin-top: 5px;
    z-index: 9;
}
.open span:nth-child(2) {
    margin-top: 12.5px;
}
.open span:nth-child(3) {
    margin-top: 20px;
}

.sub-menu {
    -webkit-transition: all 0.8s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    transition: all 0.8s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    height: 0;
    width: 0;
    right: 0;
    top: 0;
    position: absolute;
    background-color: rgba(204, 141, 46, 0.54);
    border-radius: 50%;
    z-index: 18;
    overflow: hidden;
}
.sub-menu li {
    display: block;
    float: right;
    clear: both;
    height: auto;
    margin-right: -160px;
    -webkit-transition: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    transition: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}
.sub-menu li:first-child {
    margin-top: 180px;
}
.sub-menu li:nth-child(1) {
    -webkit-transition-delay: 0.05s;
}
.sub-menu li:nth-child(2) {
    -webkit-transition-delay: 0.10s;
}
.sub-menu li:nth-child(3) {
    -webkit-transition-delay: 0.15s;
}
.sub-menu li:nth-child(4) {
    -webkit-transition-delay: 0.20s;
}
.sub-menu li:nth-child(5) {
    -webkit-transition-delay: 0.25s;
}
.sub-menu li a:not([href]):not([tabindex]) {
    color: #fff;
    font-family: 'Lato', Arial, Helvetica, sans-serif;
    font-size: 16px;
    width: 100%;
    display: block;
    float: left;
    line-height: 40px;
}
.sub-menu li a:not([href]):not([tabindex]):hover {
    color: #fff;
    font-family: 'Lato', Arial, Helvetica, sans-serif;
    font-size: 16px;
    width: 100%;
    display: block;
    float: left;
    line-height: 40px;
    text-decoration-line: underline;
}
.sub-menu li a {
    color: #fff;
    font-family: 'Lato', Arial, Helvetica, sans-serif;
    font-size: 16px;
    width: 100%;
    display: block;
    float: left;
    line-height: 40px;
}

.oppenned .sub-menu {
    opacity: 1;
    height: 400px;
    width: 400px;
}
.oppenned span:nth-child(2) {
    overflow: visible;
}
.oppenned span:nth-child(1), .oppenned span:nth-child(3) {
    z-index: 100;
    -webkit-transform: rotate(45deg);
    transform: rotate(45deg);
}
.oppenned span:nth-child(1) {
    -webkit-transform: rotate(45deg) translateY(6px) translateX(6px);
    transform: rotate(45deg) translateY(6px) translateX(6px);
}
.oppenned span:nth-child(2) {
    height: 400px;
    width: 400px;
    right: -160px;
    top: -160px;
    border-radius: 50%;
    background-color: rgba(204, 141, 46, 0.54);
}
.oppenned span:nth-child(3) {
    -webkit-transform: rotate(-45deg) translateY(-5px) translateX(5px);
    transform: rotate(-45deg) translateY(-5px) translateX(5px);
}
.oppenned li {
    margin-right: 168px;
}

.button {
    display: block;
    float: left;
    clear: both;
    padding: 20px 40px;
    background: #fff;
    border-radius: 3px;
    border: 2px solid #FFCF88;
    overflow: hidden;
    position: relative;
}
.button:after {
    -webkit-transition: -webkit-transform 0.3s ease;
    transition: -webkit-transform 0.3s ease;
    transition: transform 0.3s ease;
    transition: transform 0.3s ease, -webkit-transform 0.3s ease;
    content: "";
    position: absolute;
    height: 200px;
    width: 400px;
    -webkit-transform: rotate(45deg) translateX(-540px) translateY(-100px);
    transform: rotate(45deg) translateX(-540px) translateY(-100px);
    background: #FFCF88;
    z-index: 1;
}
.button:before {
    -webkit-transition: -webkit-transform 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    transition: -webkit-transform 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    transition: transform 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    transition: transform 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55), -webkit-transform 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    content: attr(title);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    color: #fff;
    z-index: 2;
    text-align: center;
    padding: 20px 40px;
    -webkit-transform: translateY(200px);
    transform: translateY(200px);
}
.button:hover {
    text-decoration: none;
}
.button:hover:after {
    -webkit-transform: translateX(-300px) translateY(-100px);
    transform: translateX(-300px) translateY(-100px);
}
.button:hover:before {
    -webkit-transform: translateY(0);
    transform: translateY(0);
}