body{
    background-color : pink;
}

.heading{
    text-align : center;
    color: white;

}
.container {
    margin-left: auto;
    margin-right: auto;
    padding-left: 15px;
    padding-right:15px;
}

.nav-link{
   color : blue;

}
#pink{
    height:250px;
    width:250px;
    float:left;
}
#name {
    background-color: pink ;
    color: white;
    margin-bottom: 1rem;
    padding: 2rem 1rem;
    text-align: center;
}
.default{
    display:block;
}
#biophysics{
    height:250px;
    width:500px;
    float:left;
}

#genetics{
    height:250px;
    width:500px;
    float:right;
}