style.css

* {
    margin: auto;
    /* border: solid 1px grey; */
}

body {
    font-size: 14px;
    box-sizing: border-box;
    background-color: #fff;
}
#container{
        height:100%;
        margin:auto;
        /* height: 100vh;*/
        max-width: 1000px; 
                }
header{
   
    height: 25vh;
    text-align: center; 
    background:no-repeat #ffffff url("https://picsum.photos/id/1015/1000/280");
    /* line-height:12.5vh; */
   
}
nav>div{
   display: inline-block;
   padding-top: 47px;
   
   }

   h1{
    padding-top: 60px;
   
   }
main{
    
    height: 50vh;
    /* float:left; */
    display: inline-block;
    width: 69%;
    /* left:10vw; */
    background-color: rgba(255,0,0,0.5);
}


p {
    line-height: 1.5rem;
}
aside{

    float: right;
    height: 50vh;
    width: 30%;
    
    background-color: palegreen;
}

footer{
    width:100%;

    /* clear:both; */
    height: 25vh;
    background-color: blueviolet;
}