style1-General.css

html {
    box-sizing: border-box;
    font-size: 62.5%;
}

*, *::before, *::after {
    box-sizing: inherit;
}

:root {
    --white: hsl(0, 0%, 100%);
    --dark: hsl(0, 0%, 0%);
    --cyan: hsl(179, 62%, 25%);
    --ltcyan: hsl(179, 62%, 30%);
    --yellow: hsl(71, 73%, 58%);
    --dkyellow: hsl(71, 73%, 48%);
    --ltgray: hsl(204, 43%, 96%);
    --grayblue: hsl(218, 22%, 67%);
    --subtitle: hsl(0, 0%, 45%);
    }

body {
    margin: 0;
    font-family: 'Karla', sans-serif;
    background-color: var(--ltgray);
    color: var(--dark);
    padding: 7.2rem 3.2rem 1rem 3.2rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

a {
    text-decoration: none;
}

h1, h2 {  
    font-weight: bold;
    margin-top: 0;
}

h1 {
    font-size: 2rem;
    margin-bottom: 2rem;
    line-height: 2.4rem;
    letter-spacing: .25 px;
}

h2 {
    font-size: 1.8rem;
    line-height: 2.1rem;
    margin-bottom: 1.8rem;
}

p {
    margin-top: 0;
    line-height: 2.6rem;
}

@media only screen and (min-width: 700px){
    body {
        height: 100vh;
    }

    h1 {
        font-size: 2.4rem;
        line-height: 2.8rem;
    }
}