#blah2 {
    position: absolute;
    top: 30px;
    bottom: 10px;
    right: 10px;
    left: 10px;
}

#blah {
    width: calc(100% - 2px);
    height: calc(100% - 150px);
    /*position: relative;
    top: 30px;
    bottom: 10px;
    right: 10px;
    left: 10px;*/
}

.ace_gutter-cell.ace_breakpoint {
    border-radius: 20px 0px 0px 20px;
    box-shadow: 0px 0px 1px 1px red inset;
}