* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 15px;
}

body {
    background: #f7f7ff;
    font-family: 'Montserrat', sans-serif;
    width: 80%;
    max-width: 1440px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    overflow-x: scroll;
}

.title1 {
    margin: 30px; 
}

header {
    color: hsl(233, 13%, 49%);
    margin: 3.3rem 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.toggle {
    margin-top: 2rem;
    color: hsl(234, 14%, 74%);
    display: flex;
    align-items: center;
}

.toggle-btn {
    margin: 0 1rem;
}

.checkbox {
    display: none;
}

.sub {
    background: linear-gradient(135deg,
            rgba(163, 168, 240, 1) 0%,
            rgba(105, 111, 230, 1)100%);
    display: flex;
    align-items: center;
    justify-content: flex-start;
    height: 1.6rem;
    width: 3.3rem;
    border-radius: 1.6rem;
    padding: 0.3rem;
}

.circle {
    background: #fff;
    height: 1.4rem;
    width: 1.4rem;
    border-radius: 50%;
}

.checkbox:checked+.sub {
    justify-content: flex-end;
}

.card {
    background: #fff;
    color: hsl(233, 13%, 49%);
    border-radius: 0.8rem;
}

.cards {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
}

.cards .card.active {
    background: linear-gradient(135deg,
            rgba(163, 168, 240, 1) 0%,
            rgba(105, 111, 230, 1)100%);
    color: #fff;
    display: flex;
    align-items: center;
    transform: scale(1.1);
    z-index: 1;
}

ul {
    margin: 2.6rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-around;
}

ul li {
    list-style: none;
    display: flex;
    justify-content: center;
    width: 100%;
    padding: 1rem;
}

ul li.price {
    font-size: 3rem;
    color: hsl(232, 13%, 33%);
    padding-bottom: 2rem;
}

.shadow {
    box-shadow: -5px 5px 15px 1px rgba(0, 0, 0, 0.1);
}

.card.active .price {
    color: #fff;
}

.btn {
    margin-top: 1rem;
    height: 2.6rem;
    width: 13.3rem;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 4px;
    background: linear-gradient(135deg,
            rgba(163, 168, 240, 1) 0%,
            rgba(105, 111, 230, 1)100%);
    outline: none;
    border: 0;
    font-weight: bold;
}

.active-btn {
    background: #fff;
    color: hsl(237, 63%, 64%);
}

.bottom-bar {
    border-bottom: 2px solid hsla(240, 8%, 85%, 0.582);
}

.card.active .bottom-bar {
    border-bottom: 2px solid hsla(240, 8%, 85%, 0.253);
}

.pack {
    font-size: 1.1rem;
}


@media(max-width:280px) {
    ul {
        margin: 1rem;
    }

    h1 {
        font-size: 1.2rem;
    }

    .toggle {
        display: flex;
        flex-direction: column;
        justify-content: space-around;
        align-items: center;
        height: 80px;
    }

    .cards {
        margin: 0;
        display: flex;
        flex-direction: column;
    }

    .card {
        transform: scale(0.8);
        margin-bottom: 1rem;
    }

    .cards .card.active {
        transform: scale(0.8);
    }
}


@media(min-width:320px) and (max-width:414px) {
    .cards {
        display: flex;
        flex-direction: column;
    }

    .card {
        margin-bottom: 1rem;
    }

    .cards .card.active {
        transform: scale(1);
    }
}

@media(min-width:414px) and (max-width:768px) {
    .card {
        margin-bottom: 1rem;
        margin-right: 1rem;
    }

    .cards .card.active {
        transform: scale(1);
    }

}

@media (min-width:768px) and (max-width:1046px) {
    .card {
        display: flex;
    }

    .card {
        margin-bottom: 1rem;
        margin-right: 1rem;
    }

    .cards .card.active {
        transform: scale(1);
    }

}