body {
    font-family: Arial, sans-serif;
    background-color: #121212;
    display: -webkit-box;
    display: -webkit-flex;
    display: -moz-box;
    display: flex;
    -webkit-box-pack: center;
    -webkit-justify-content: center;
       -moz-box-pack: center;
            justify-content: center;
    -webkit-box-align: center;
    -webkit-align-items: center;
       -moz-box-align: center;
            align-items: center;
    margin: 0;
    -webkit-user-select: none;
       -moz-user-select: none;
            user-select: none;
}

.main {
    max-width: 320px;
    width: 100%;
}

.image {
    background-position: center;
    background-size: cover;
}

h1 {
    width: 100%;
    font-size: 20px;
    text-align: center;
}

.header {
    width: 100%;
    display: -webkit-box;
    display: -webkit-flex;
    display: -moz-box;
    display: flex;
    -webkit-box-align: center;
    -webkit-align-items: center;
       -moz-box-align: center;
            align-items: center;
}

.header h1 {
    width: -webkit-calc(100% - 120px);
    width: calc(100% - 120px);
}

.back-btn {
    width: 40px;
    height: 40px;
    margin: 10px;
    background-image: url(../../images/back.382b99b.webp);
    background-size: cover;
}

.ad-container {
    display: -webkit-box;
    display: -webkit-flex;
    display: -moz-box;
    display: flex;
    -webkit-box-pack: center;
    -webkit-justify-content: center;
       -moz-box-pack: center;
            justify-content: center;
    margin: 16px auto !important;
}

#ad-countdown {
    position: fixed;
    top: 0;
    left: 50%;
    -webkit-transform: translateX(-50%);
            transform: translateX(-50%);
    background: rgb(255, 255, 255);
    color: #000000;
    font-size: 14px;
    padding: 10px;
    border-radius: 0 0 10px 10px;
    display: none;
    z-index: 9999;
}

@media screen and (orientation: portrait) {
    .main {
        max-width: 400px;
    }
}