body {
    grid-template-columns: 100%;
    padding-bottom: 2em;  
    grid-template-areas: 
       "head" 
       "nav"
       "main"
       "foot";
 }

 .two-columns{
    display: grid;
    grid-template-columns: 100%;
    grid-template-rows: auto;
 }

 #section-a{
    grid-row:1/2;
 
}

#section-b{
    grid-row:2/3;

}

#section-c{
    grid-row:3/4;
    grid-column: 1/2;

}

#section-d{
    grid-row:4/5;

}
 table{
    margin-left:1em;
 }

 .two-columns-form{
    display: grid;
    grid-template-columns: 100%;
    grid-template-rows: auto;

}

#section-1{
    grid-row:1/2;
}

#section-2{
    grid-row:2/3;
    grid-column:1/2;
}
#section-3{
    grid-row:3/4;
}

#section-4{
    grid-row:4/5

}

.two-columns-detail{
    display:grid;
    grid-template-columns: 100%;
    grid-template-rows: auto;

}

#section-one{
    grid-row:1/2;
}
#section-two{
    grid-row: 2/3;
}

#section-three{
    grid-row:4/5;
    grid-column:1/2;
}

#section-four{
    grid-row:3/4;
    grid-column:1/2;
}

#detail-paragraph{
    padding:2em;
}