#bottom1 {
margin-right: auto;
margin-left: auto;
}

#bottom2 {
text-align: left;
background-color: #ffff00;
margin-bottom: 15px;
}

#bottom3 {
margin-top: 30px;
}

#main {
background-color: 00C7FF;
position: relative;
width: 100%;
max-width: 2500px;
margin-top: 80px;
margin-right: auto;
margin-left: auto;
box-sizing: border-box;
}

#bottom4 {
background-color: #00C7FF;
}