body,
body * {
   margin: 0;
   padding: 0;
   vertical-align: top;
   box-sizing: border-box;
}

body {
    font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;
}
header, 
 main { 
    width: 1000px; 
    margin-left: calc(50% - 500px);
    display: inline-block;
    margin-top: 20px;
     }

 header > img {
    float: left;
    height: 46px;
 }   

 header > nav {
    float: right;
    margin-top: 13px;
    
 }

nav > a {
    display: inline-block;
    font-size: 20px;
    line-height: 20px;
    margin-left: 20px;
    text-decoration: none;
    color: black;
    padding-bottom: 5px;
 }
 nav > a:hover {
    color: tomato;
    border-bottom: 2px solid tomato;
 }
 nav >a:nth-child(1) {
    border-bottom: 2px solid tomato;
 }
body > main {
    margin-top: 100px;}

main > div {
    width: 45%;
    float: left;
    padding-right: 10%;
}
h1 {
   margin-bottom: 20px;
   font-family: cursive; 
   font-weight: normal;
}
h1 > span {
   color: tomato;
}

p{
   margin-bottom: 20px;
}
div > a{ 
   padding: 10px;
   padding-left: 25px;
   padding-right: 25px;
   color: white;
   text-decoration: none;
   background-color: tomato;
   border-radius: 5px;

}
main > img{
   width: 55%;
   float: left;
   height: 300px;
   object-fit: contain;
}