.selectrumPopup {
    visibility: hidden;
    opacity: 0;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.9);
    z-index: 99999;
    transition: visibility .3s, opacity .3s;
}
.selectrumPopup.visible {
    visibility: visible;
    opacity: 1;
}
.selectrumPopup__buttonClose {
    position: fixed;
    top: 0;
    right: 0;
    width: 40px;
    height: 40px;
    color: #ffffff;
    background: transparent;
    border-radius: 0;
    border: none;
    cursor: pointer;
}
.selectrumPopup__buttonClose:before,
.selectrumPopup__buttonClose:after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 2px;
    translate: -50% -50%;
    background: currentColor;
}
.selectrumPopup__buttonClose:before {
    rotate: 45deg;
}
.selectrumPopup__buttonClose:after {
    rotate: -45deg;
}
.selectrumPopup__wrapper {
    position: absolute;
    inset: 0;
    overflow: hidden;
}
.selectrumPopup__inner {
    padding: 40px 0;
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    text-align: center;
}
.selectrumPopup__inner:before {
    content: '';
    display: inline-block;
    font-size: 0;
    height: 100%;
    vertical-align: middle;
    width: 0;
}
.selectrumPopup__box {
    width: 100%;
    max-width: 600px;
    background: #ffffff;
    display: inline-block;
    vertical-align: middle;
    text-align: left;
}
.selectrumPopup__content {
    padding: 40px;
}