@import url('https://fonts.googleapis.com/css2?family=Karla:ital,wght@0,200..800;1,200..800&display=swap');
:root{

    --p-clr : hsl(71, 73%, 54%);
    --s-clr : hsl(179, 62%, 43%);

    --d-clr-lg : hsl(204, 43%, 93%);
    --d-clr-gb : hsl(218, 22%, 67%);

}

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

body{
    font-family: 'karla';
    font-weight: 500;
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
}

/*utility classes*/

/* font sizes */
.f-s0{
    font-size: 1.6em;
}
.f-s1{
    font-size: 1.3em;
    font-weight: 700;
}
.f-s2{
    font-size: 1.1em;
    font-weight: 600;
}
.f-s3{
    font-size: 1em;
    font-weight: 600;
}
.f-s4{
    font-size: 0.8em;
}
/* font colors */
.f-cp{
    color: var(--p-clr);
}
.f-cs{
    color: var(--s-clr);
}
.f-cw{
    color: whitesmoke;
}
.f-clg{
    color: var(--d-clr-gb);
}
.f-clw{
    color: rgb(218, 218, 218);
}

/* layout */
.sub-card{
    display: flex;
    flex-direction: column;
    justify-content: stretch;
    align-items: stretch;
    width: 85%;
    border-radius: 7px;
    box-shadow: 2px 2px 8px grey;
}

.sub-card__sec{
    padding: 1.3em 1.5em;
}

p{
    margin: 0.6em 0;
    line-height: 1.5em;
}

/* styling */
body{
    background-color: var(--d-clr-lg);
}

.sub-card__desc{
    background-color: white;
    border-radius: 7px 7px 0 0;
}

.sub-card__pricing{
    background-color: var(--s-clr);
}

.sub-card__whyus{
    background-color: hsl(179, 55%, 52%);
    padding-right: 4.5em;
    border-radius: 0 0 7px 7px;
}

button{
    padding: 0.8em;
    width: 100%;
    border-radius: 5px ;
    border: none;
    background-color: var(--p-clr);
    color: rgb(237, 253, 255);
    font-weight: 520;
    box-shadow: 1px 2px 5px 2px rgb(126, 126, 126);
}

span{
    font-size: 0.6em;
    font-weight: 400;
    color: rgb(218, 218, 218);
    vertical-align: top;
}

/* responsiveness */
@media (min-width : 425px){
    .sub-card{
        width: 375px;
    }
}

@media (min-width : 768px) {
    body{
        font-size: 16px;
    }
    .sub-card{
        display: grid;
        grid-template-rows: 0.5fr 1.1fr;
        grid-template-columns: 1fr 1fr;
        width: 750px;
    }
    .sub-card__desc{
        grid-column: span 2;
        padding-right: 5em;
    }
    .sub-card__pricing{
        border-radius: 0 0 0 7px;
    }
    .sub-card__whyus{
        border-radius: 0 0 7px 0;
    }
}