@media only screen and (max-width: 900px) {
    .promo {
        border-radius: 0;
    }
}

html, body {
    font-family: Ubuntu, Arial, Helvetica, sans-serif;
    padding: 0;
    margin: 0;
    height: 100%;
}

html {
    background: white;
}
body {
    background: linear-gradient(#e6ecf7, #ffffff);
}


a, button {
    color: #494949;
}

nav {
    padding: 0.5em 1em;
    color: gray;
    text-align: center;
    left: 50%;
    transform: translateX(-50%);
    border-radius: 0 0 10px 10px;
    background-color: white;
    position: absolute;
}

nav .divider {
    margin-left: 0.5em;
    margin-right: 0.5em;
}

section {
    padding: 1em 1.5em;
    max-width: 870px;
    margin-left: auto;
    margin-right: auto;
    border-radius: 10px;
}

.intro {
    padding-top: 3em;
}

.promo {
    margin-top:1.5em;
    margin-bottom: 1.5em;
    padding-top: 1em;
    padding-left: 2em;
    /*background-image: linear-gradient(#fff0c300, #ffFFFFff), url("logo.png");*/
    background: white repeating-linear-gradient(
            45deg,
            #606dbc,
            #774698 10px
    ) repeat-y;
    background-size: 10px 10px;
    box-shadow: 10px 0px 50px #b0b0b0;
    /*border: 1px solid #e8e8e8;*/
}

.footer {
    color: gray;
    font-size: 0.8em;
}

.code {
    font-size: 2em;
    font-weight: bold;
    background: #ffe45c;
    border: 1px solid #ffe45c;
    padding: 0.5em 1em;
    margin: 0;
    display: inline-block;
    border-radius: 100px;
    white-space: nowrap;
}

.copy {
    margin: 0.3em 0;
}

.copy button{
    background-color: transparent;
    border: none;
    padding: 1em;
    text-decoration: underline;
    border-radius: 10px;
    cursor: pointer;
}

.copy button:hover, .copy button:focus {
    text-decoration: none;
    background-color: white;
}

.btn {
    display: inline-block;
    background: linear-gradient(#008cff, #008cff);
    border: 1px solid #008cff;
    color: white;
    text-decoration: none;
    font-weight: bold;
    padding: 1em 2em;
    border-radius: 100px;
}

.btn-sm {
    margin-top: 1em;
    /*font-size: 0.9em;*/
    background: #ffffff;
    color: black;
    border: 1px solid #d2d2d2;
    padding: 0.5em 1em;
    font-weight: normal;
}

.btn:hover, .btn:focus {
    background: #def1ff;
    color: black;
}

.block {
    position: relative;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    display: inline-block;
    background-color: #f5f5f5;
    padding: 2em;
    border: 1px dotted gray;
    border-radius: 20px;
}

.btn:active {
    background: inherit;
    color: inherit;
}

.calendar iframe{
    width: 100%;
    margin: 0.5em;
}