body {
    
background-color: #ffffff;
margin: auto;

}

.center {
  display: block;
  margin-left: auto;
  margin-right: auto;
  width: 50%;
}


#mainTitleA {
    width: 50%;
    padding: 0px;
    margin: 0px;
    border: 5px solid red;
    color: Sienna;
    text-align: left;
}

#mainTitleB {
    align-items: right;
    align-self: right;
    width: 40%;
    padding: 0px;
    margin: 0px;
    border: 5px solid green;
    color: DarkGray;
    text-align: left;
}

#divA {
    align-self: center;
    
    width: 100%;
    
    
}