body{
    padding: 0;
    margin: 0;
    font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;
}


.top-of-the-list{
    background: linear-gradient(45deg, brown, orangered);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

h1{
    font-size: 4rem;
}


.logo img{
    height: 50px;
    width: 45px;
}

li{
    list-style: none;
}
/*THE LINK AT THE TOP*/
.book{
    align-items: center;
    text-decoration: none;
    color: black;
    font-size: 1.2rem;
    margin-left: 0.7rem;
    margin-right: 0.7rem;
    transition: 0.3s;
}
.book:hover{
    color: white;
    background-color: black;
    border-radius: 30%;
    padding: 7px;
}


ul{
    display: flex;
}

h2{
    color: brown;
    font-size: 3rem; 
    margin-left: 10px;
}
h3{
    color: rgb(245, 88, 60);
    font-size: 2rem;
    margin-left: 10px;
}



/*RESPONSIVE DESIGN*/

@media screen and (min-width: 320px) and (max-width: 360px) {

    h1{
        text-align: center;
        margin-top: 0;
        margin-bottom: 10px;
        font-size: 1.7rem;
    }
    .logo{
        display: none;
    }
    

    .top-of-the-list{
        background: linear-gradient(45deg, brown, orangered);
        display: block;
        justify-content: center;
        margin-top: 0;
    }

    .book{
        text-decoration: none;
        color: white;
        font-size: 7px;;
        margin-left: 6px;
    }
    h2{
        color: brown;
        font-size: 2rem; 
        margin-left: 10px;
    }
    h3{
        color: rgb(245, 88, 60);
        font-size: 1.3rem;
        margin-left: 10px;
    }
}
@media screen and (min-width: 361px) and (max-width:480px) {

    h1{
        text-align: center;
        margin-top: 0;
        margin-bottom: 10px;
        font-size: 2rem;
    }
    .logo img{
        height: 40px;
        width: 35px;
    }
    

    .top-of-the-list{
        background: linear-gradient(45deg, brown, orangered);
        display: block;
        justify-content: center;
        margin-top: 0;
    }
    h2{
        color: rgb(12, 12, 12);
        font-size: 2.3rem; 
        margin-left: 10px;
    }
    h3{
        color: rgb(245, 82, 45);
        font-size: 1.4rem;
        margin-left: 10px;
    }

    .book{
        text-decoration: none;
        color: black;
        font-size: 10px;;
        margin-left: 6px;
    }
    
}

@media screen and (min-width: 481px) and (max-width: 767px) {

    h1{
        text-align: center;
        margin-top: 0;
        margin-bottom: 10px;
    }
    .logo img{
        height: 40px;
        width: 39px;
    }

    .top-of-the-list{
        background: linear-gradient(45deg, rgb(240, 152, 20), rgb(216, 90, 44));
        display: block;
        justify-content: center;
        margin-top: 0;
    }

    nav{  
        width: 100%;
    }

    .book{
        text-decoration: none;
        color: black;
        font-size: 15px;;
        margin-left: 10px;
        margin-right: 10px;
        text-align: center;
    }
}


@media screen and (min-width: 768px) and (max-width: 1024px) {

 
    h1{
        text-align: center;
        margin-top: 0;
        margin-bottom: 10px;
    }
    

    .top-of-the-list{
        background: linear-gradient(45deg, rgb(240, 152, 20), rgb(216, 90, 44));
        display: block;
        justify-content: center;
        margin-top: 0;
    }

    nav{  
        width: 100%;
    }

    .book{
        text-decoration: none;
        color: black;
        font-size: 25px;;
        margin-left: 15px;
        margin-right: 15px;
        text-align: center;
    }
}