html, body {
    font-family: Arial, sans-serif;
    padding: 0;
    margin: 0;
    background-color: #f3f8fc;
    color: black;
}

a {
    color: black;
}

p, ul, li {
    line-height: 1.7em;
}

li {
    margin: 1em;
}

.note {
    font-style: italic;
    color: gray;
}

.langswitch {
    padding: 0 .5em;
    background-color: #fff9e5;
    right: 0;
    text-align: center;
    position: absolute;
    list-style: none;
    margin: 0;
}

.langswitch__item {
    display: inline-block;
    padding: .5em;
    margin: 0;
}

.langswitch__item_active {
    font-weight: bold;
}

.calendar {
    width: 100%;
    max-width: 940px;
    overflow: scroll;
}

.calendar__frame {
    width: 100%;
    min-width: 850px;
}

.container {
    background-image: url("img/back.svg");
    background-repeat: no-repeat;
    background-size: contain;
    background-position: top center;
}

.block {
}

.block_sticky {
    position: sticky;
    top: -2px;
    text-align: center;
    margin-bottom: 3em;
}

.block_sticky[stuck] {
    box-shadow: 0 0 16px rgba(0, 0, 0, 0.1);
    background-color: white;
}

.block_contrast {
    background-color: rgba(255, 255, 255, 0.5);
    margin-bottom: 2em;
}

.block__container {
    max-width: 960px;
    margin-left: auto;
    margin-right: auto;
    padding: 2em;
}

.block__container_sticky {
    padding: 0;
    display: inline-block;
    background-color: white;
    border-radius: 100em;
}

.top {
    text-align: center;
    margin-left: auto;
    margin-right: auto;
    padding-top: 4em;
}

.logo {
    width: 140px;
}

.center {
    text-align: center;
}

.promo {
    display: inline-flex;
    border-radius: 100em;
    background-color: white;
    vertical-align: middle;
    border: 1px solid rgba(169, 169, 169, 0.26);
    margin: 1em 1em;
}

.promo__code {
    font-size: 1.5em;
    font-weight: bold;
    display: inline-block;
    padding: 1em;
    border-radius: 100em;
    background-color: #ffe54f;
    white-space: nowrap;
    z-index: 2;
    box-shadow: 0 0 8px rgba(0, 0, 0, 0.01);
}

.promo__button {
    box-shadow: 0 0 16px rgba(0, 0, 0, 0.01);
    border: none;
    background-color: rgba(245, 245, 245, 0.66);
    padding: 1em 2em 1em 7em;
    font-weight: bold;
    line-height: normal;
    margin-left: -6em;
    border-radius: 100em;
    user-select: none;
    z-index: 1;
    cursor: pointer;
    display: none;
    color: black;
    font-size: 1rem;
}

.promo__button:hover, .promo__button:active {
    background: linear-gradient(90deg, transparent 0%, transparent 10%, rgba(184, 184, 184, 0.5) 100%);
}

.action {
    text-align: center;
}

.action__link {
    text-decoration: none;
    display: inline-block;
    color: white;
    background-color: #3a4d91;
    border-radius: 10px;
    padding: 1em 2em;
}

.action__link:hover, .action__link:active {
    background-color: #6c7caf;
}

footer {
    color: gray;
    text-align: center;
    padding: 2em;
}