*{
    font-family: Verdana;
}
header,footer{
    background-color: #004D40;
    color: white;
    padding: 10px;
    text-align: center;
}
aside{
    background-color: #80CBC4;
    color: white;
    height: 500px;
    width: 30%;
    float: left;
}
main{
    background-color: #E0F2F1;
    height: 500px;
    width: 30%;
    text-align: center;
    float: left;
}
section{
    height: 250px;
    width: 40%;
    float: left;
}
#d1{
    background-color: #E0F2F1;
}
#d2{
    background-color: #B2DFDB;
}
h3{
    text-align: center;
}
img{
    padding: 5px;
    height: 150px;
    border-style: dotted;
    border-width: 1px;
    border-color: #004D40;
    border-radius: 5px;
}
input{
    margin: 10px;
}