@import url("https://fonts.googleapis.com/css?family=Open+Sans|Roboto:400,700&display=swap");

:root {
    /* dark shades of primary color*/
    --clr-primary-1: hsl(205, 86%, 17%);
    --clr-primary-2: hsl(205, 77%, 27%);
    --clr-primary-3: hsl(205, 72%, 37%);
    --clr-primary-4: hsl(205, 63%, 48%);
    /* primary/main color */
    --clr-primary-5: hsl(205, 78%, 60%);
    /* lighter shades of primary color */
    --clr-primary-6: hsl(205, 89%, 70%);
    --clr-primary-7: hsl(205, 90%, 76%);
    --clr-primary-8: hsl(205, 86%, 81%);
    --clr-primary-9: hsl(205, 90%, 88%);
    --clr-primary-10: hsl(205, 100%, 96%);
    /* darkest grey - used for headings */
    --clr-grey-1: hsl(209, 61%, 16%);
    --clr-grey-2: hsl(211, 39%, 23%);
    --clr-grey-3: hsl(209, 34%, 30%);
    --clr-grey-4: hsl(209, 28%, 39%);
    /* grey used for paragraphs */
    --clr-grey-5: hsl(210, 22%, 49%);
    --clr-grey-6: hsl(209, 23%, 60%);
    --clr-grey-7: hsl(211, 27%, 70%);
    --clr-grey-8: hsl(210, 31%, 80%);
    --clr-grey-9: hsl(212, 33%, 89%);
    --clr-grey-10: hsl(210, 36%, 96%);
    --clr-white: #fff;
    --clr-red-dark: hsl(360, 67%, 44%);
    --clr-red-light: hsl(360, 71%, 66%);
    --clr-green-dark: hsl(125, 67%, 44%);
    --clr-green-light: hsl(125, 71%, 66%);
    --clr-black: #222;
    --ff-primary: "Roboto", sans-serif;
    --ff-secondary: "Open Sans", sans-serif;
    --transition: all 0.3s linear;
    --spacing: 0.1rem;
    --radius: 0.25rem;
    --light-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    --dark-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    --max-width: 1170px;
    --fixed-width: 620px;
  }
*,::after,::before{
    margin: 0;
    padding: 0%
    box-sizing: border-box;
}

body{
    font-family : var(--ff-secondary);
    background : var(--clr-grey-10);
    color : var(--clr-grey-1);
    line-height: 1.5;
    font-size : 0.875rem;
}
ul{
    list-style-type: none;
}
a{
    text-decoration:none;
}
h1,h2,h3,h4{
    letter-spacing: var(--spacing);
    text-transform: capitalize;
    line-height : 1.25;
    margin-bottom : 0.75rem;
    font-family: var(--ff-primary);
}
h1{
    font-size: 3rem ;
}

h2{
    font-size:2rem ;
}

h3{
    font-size:1.25rem ;
}

h4{
    font-size:0.875rem ;
}
@media screen and (min-width: 800px) {
h1{
    font-size: 4rem;
}
h2 {
    font-size: 2.5rem;
}
h3 {
    font-size: 1.75rem;
}
h4 {
    font-size: 1rem;
}
body {
    font-size: 1rem;
}
h1,
h2,
h3,h4 {
    line-height: 1;
}
}

main{
    min-height : 100vh;
    display : grid;
    place-items: center;
}
nav{
    background-color: var(--clr-white);
    height : 3rem;
    display:grid;
    align-items:center;
    box-shadow: var(--dark-shadow);
}
.nav-center{
    width: 90vw;
    max-width: var(--fixed-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.nav-center h4{
    margin-bottom: 0;
    color: var(--clr-primary-5);
    
}
.nav-links{
    display:flex;
}
nav a{
    text-transform: capitalize;
    font-weight: 700;
    font-size: 1rem;
    color: var(--clr-primary-1);
    letter-spacing: var(--spacing);
    margin-right: 1rem;
}
nav a:hover{
    color : var(--clr-primary-5);

}
main {
    min-height: calc(100vh - 3rem);
    display: grid;
    place-items: center;
  }

.container{
    text-align: center;

}
.container h2{
    background-color: var(--clr-black);
    color:var(--clr-white);
    padding:1rem;
    border-radius: var(--radius);
    margin-bottom: 2.5rem;
}
.color{
    color: var(--clr-primary-5);
}
.btn-hero{
    font-family: var(--ff-primary);
    text-transform: uppercase;
    background: transparent;
    color: var(--clr-black);
    letter-spacing: var(--spacing);
    display: inline-block;
    font-weight: 700;
    transition: var(--transition);
    border: 2px solid var(--clr-black);
    cursor: pointer;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
    border-radius: var(--radius);
    font-size: 1rem;
    padding: 0.75rem 1.25rem;

}
.btn-hero:hover{
    color: var(--clr-white);
    background:var(--clr-black);
}