body{
    background-color: rgb(238, 236, 235) ;
}
header{
    position: relative;
    margin: 0 auto;
}
nav{
    position: relative;
    margin: 0 auto;
    width: 1500px;
}
section{
    color: white;
    position: relative;
}
#img1{
    display: flex;
    justify-content: center;
    margin: 20px 0;
    
}
#img02{
    margin: 0 100px;
    float: left;
    width: 180px;
}
#cont01{
    display: block;
    width: 1300px;
    font-size: 20px;
}
#cont02{
    font-size: 30px;
}
aside{
    width: 3000px;
    height: 200px;
    margin: 80px auto;
}
hr{
    box-shadow: 1px 1px 18px 1px #555555;
    margin-top: 20px;
    margin-bottom: 20px;
}