* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
}

body {
    color: var(--tg-theme-text-color);
    background: var(--tg-theme-bg-color);
}

main {
    width: 100%;
    height: 100vh;
    min-height: 100vh;
    text-align: center;
}

#ad-content {
    height: 100vh;
    min-height: 100vh;
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
}

.ad-texts {
    padding: 20px;
}

#pre-content {
    padding: 20px;
    height: 100vh;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.first-text {
    font-size: 34px;
    margin-bottom: 20px;
}

.second-text {
    font-size: 16px;
    font-weight: 300;
    opacity: 80%;
}

.btn {
    border: 0;
    border-radius: 5px;
    min-height: 60px;
    height: 60px;
    width: 100%;
    font-size: 20px;
    font-weight: 500;
    cursor: pointer;
    color: var(--tg-theme-button-text-color);
    background: var(--tg-theme-button-color);
    position: sticky;
    bottom: 0;
}

#video {
    width: 100vw;
    height: 100vw;
    object-fit: cover;
}