*{
    font-family: verdana;
}
aside{
    width: 20%;
    height: 610px;
    float: left;
}
img{
    width:100%;
    height: 610px;
}
header,nav,main,footer{
    float:left
}

header, footer, nav{
    background-color: mediumpurple;
    color: white;
    width:80%;
    height: 50px;
    text-align: center;
    text-shadow: 4px 4px dimgray;
}
nav{
    padding-top: 10px;
}
main{
    background-color: thistle;
    width: 80%;
    height:450px;
    overflow: auto;
}
#container{
   display:flex;
}
li input[type="button"]{
    background-color: mediumpurple;
    color: white;
    float: right;
    height: 30px;
    border: none
}

ul{
    margin: 40px auto;
    width: 70%;
    font-size: 25px;
    border: 2px solid mediumpurple;
    list-style-type: none;
}



li{
    padding: 10px;
}
li:nth-child(even){
    background-color: #DDCADD;
}
li:hover{
    background-color: lavender;
}