body{
    background-color:#f4f4f4;
    color:#555;
    font-family:Arial, Helvetica, sans-serif;
    font-size:16px;
    line-height:1.6em;
    margin:0;
}

.container{
    width:80%;
    margin:auto;
    overflow:hidden;
}

#main-header{
    background-color:coral;
    color:#fff;
    height: 70px;
}

#navbar{
    background-color:#333;
    color:#fff;
    height: 60px;
}

#navbar ul{
    padding:0;
    list-style:none;
}

#navbar li{
    display:inline;
}

#navbar a{
    color:white;
    text-decoration:none;
    font-size:18px;
    padding-right:15px;
}

#showcase{
    background-image:url('../images/showcase.jpg');
    background-position:center right;
    margin-bottom:30px;
    text-align:center;
    height: calc(100vh - 410px);
}

#showcase h1{
    color:#fff;
    font-size:50px;
    line-height:1.6em;
    padding-top:30px;
}

#main{
    float:left;
    width:70%;
    padding:0 30px;
    box-sizing:border-box;
}

#sidebar{
    float:right;
    width:30%;
    background:#333;
    color:#fff;
    padding:10px;
    box-sizing:border-box;
    height: 110px;
    display: flex;
    justify-content: center;
    align-items: center;
}

#main-footer{
    background:#333;
    color:#fff;
    text-align:center;
    padding:20px;
    margin-top:40px;
    height: 60px;
}

@media(max-width:600px){
    #main{
        width:100%;
        float:none;
    }

    #sidebar{
        width:100%;
        float:none;
    }
}