.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

a,
a:visited,
a:hover,
a:active {
    color: inherit;
    text-decoration: none;
}

.outer-menu {
    position: fixed;
    top: 3vh;
    left: 7%;
    z-index: 99;
}

.outer-menu .checkbox-toggle {
    position: absolute;
    top: 0;
    left: 10px;
    z-index: 2;
    cursor: pointer;
    width: 60px;
    height: 60px;
    opacity: 0;
}

.outer-menu .checkbox-toggle:checked+.hamburger>div {
    transform: rotate(135deg);
}
.outer-menu .checkbox-toggle:checked+.hamburger>span {
    display:none;
}
.outer-menu .checkbox-toggle:checked+.hamburger>div:before,
.outer-menu .checkbox-toggle:checked+.hamburger>div:after {
    top: 0;
    transform: rotate(90deg);
}

.outer-menu .checkbox-toggle:checked+.hamburger>div:after {
    opacity: 0;
}

.outer-menu .checkbox-toggle:checked~.menu {
    pointer-events: auto;
    visibility: visible;
}

.outer-menu .checkbox-toggle:checked~.menu>div {
    transform: scale(1);
    transition-duration: .75s;
}

.outer-menu .checkbox-toggle:checked~.menu>div>div {
    opacity: 1;
    transition: opacity 0.4s ease 0.4s;
}

/*.outer-menu .checkbox-toggle:hover+.hamburger {*/
/*    box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.1);*/
/*}*/

.outer-menu .checkbox-toggle:checked:hover+.hamburger>div {
    transform: rotate(225deg);
}

.hamburger-menu{
    font-weight:600;
}

.outer-menu .hamburger {
    position: absolute;
    /*top: 0;*/
    /*left: 0;*/
    z-index: 1;
    width: 65px;
    height: 60px;
    padding: .5em 1em;
    color: #ff0000;
    border-radius: 0 0.12em 0.12em 0;
    cursor: pointer;
    transition: box-shadow 0.4s ease;
    backface-visibility: hidden;
    /*display: flex;*/
    align-items: center;
    justify-content: center;
}

.outer-menu .hamburger>div {
    position: relative;
    flex: none;
    width: 100%;
    height: 4px;
    background: #ff0000;
    transition: all 0.10s ease-out;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 10px;
}

.outer-menu .hamburger>div:before,
.outer-menu .hamburger>div:after {
    content: '';
    position: absolute;
    z-index: 1;
    top: -10px;
    left: 0;
    width: 100%;
    height: 4px;
    background: inherit;
    transition: all 0.10s ease-out;
}

.outer-menu .hamburger>div:after {
    top: 10px;
}

.outer-menu .menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    visibility: hidden;
    overflow: hidden;
    backface-visibility: hidden;
    outline: 1px solid transparent;
    display: flex;
    align-items: center;
    justify-content: center;
}

.outer-menu .menu>div {
    width: 220vw;
    height: 200vh;
    color: #ff0000;
    background: rgba(255, 219, 136, 0.80);
    /* background:#FFDB88; */
    /* border-radius: 50%; */
    transition: opacity 0.8s ease-in;
    flex: none;
    /* transform: scale(0); */
    backface-visibility: hidden;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.outer-menu .menu>div>div {
    text-align: center;
    max-width: 200vw;
    max-height: 100vh;
    opacity: 0;
    transition: opacity 0.8s ease-out;
    overflow-y: auto;
    flex: none;
    display: flex;
    align-items: center;
    justify-content: center;
}

.outer-menu .menu>div>div>ul {
    list-style: none;
    padding: 0 1em;
    margin: 0;
    display: block;
    max-height: 100vh;
    text-align: left;
}

.outer-menu .menu>div>div>ul>li {
    padding: 0;
    margin: 10px 20px;
    font-size: 25px;
    display: block;
}

.outer-menu .menu>div>div>ul>li>a {
    position: relative;
    display: inline-block;
    cursor: pointer;
    transition: color 0.4s ease;
}

.outer-menu .menu>div>div>ul>li>a:hover {
    color: #ff0000;
}

.outer-menu .menu>div>div>ul>li>a:hover:after {
    width: 100%;
}

.outer-menu .menu>div>div>ul>li>a:after {
    content: '';
    position: absolute;
    z-index: 1;
    bottom: -0.15em;
    left: 0;
    width: 0;
    height: 2px;
    background: #ff0000;
    transition: width 0.4s ease;
}

.coin-menu {
    width: 35px;
    height: 35px;
    margin-right: 5px;
}


/* animation */

@-webkit-keyframes coin-align {
    0% {
        -webkit-transform: translate3d(15%, 0, 0) rotateZ(10deg);
        -moz-transform: translate3d(15%, 0, 0) rotateZ(10deg);
        transform: translate3d(15%, 0, 0) rotateZ(10deg);
    }
    100% {
        -webkit-transform: translate3d(-15%, 0, 0) rotateZ(-10deg);
        -moz-transform: translate3d(-15%, 0, 0) rotateZ(-10deg);
        transform: translate3d(-15%, 0, 0) rotateZ(-10deg);
    }
}

@-moz-keyframes coin-align {
    0% {
        -webkit-transform: translate3d(15%, 0, 0) rotateZ(10deg);
        -moz-transform: translate3d(15%, 0, 0) rotateZ(10deg);
        transform: translate3d(15%, 0, 0) rotateZ(10deg);
    }
    100% {
        -webkit-transform: translate3d(-15%, 0, 0) rotateZ(-10deg);
        -moz-transform: translate3d(-15%, 0, 0) rotateZ(-10deg);
        transform: translate3d(-15%, 0, 0) rotateZ(-10deg);
    }
}

@-ms-keyframes coin-align {
    0% {
        -webkit-transform: translate3d(15%, 0, 0) rotateZ(10deg);
        -moz-transform: translate3d(15%, 0, 0) rotateZ(10deg);
        transform: translate3d(15%, 0, 0) rotateZ(10deg);
    }
    100% {
        -webkit-transform: translate3d(-15%, 0, 0) rotateZ(-10deg);
        -moz-transform: translate3d(-15%, 0, 0) rotateZ(-10deg);
        transform: translate3d(-15%, 0, 0) rotateZ(-10deg);
    }
}

@keyframes coin-align {
    0% {
        -webkit-transform: translate3d(15%, 0, 0) rotateZ(10deg);
        -moz-transform: translate3d(15%, 0, 0) rotateZ(10deg);
        transform: translate3d(15%, 0, 0) rotateZ(10deg);
    }
    100% {
        -webkit-transform: translate3d(-15%, 0, 0) rotateZ(-10deg);
        -moz-transform: translate3d(-15%, 0, 0) rotateZ(-10deg);
        transform: translate3d(-15%, 0, 0) rotateZ(-10deg);
    }
}