css/duplicate-subjects.css

.buttons.grid .complex-button {
    flex: 1 0 34%;
    margin: 15px 10px;

}

.buttons.grid .complex-button-full {
    flex: 1 0 68%;
    margin: 15px 10px;
}

.buttons.grid .complex-button2Right {
    flex: 1 0 34%;
    margin: 15px 10px;
    border-bottom-left-radius: 0px;
    margin-left: -4px;
    border-left: 3px solid black;
}

.buttons.grid .complex-button2Left {
    flex: 1 0 34%;
    margin: 15px 10px;
    margin-right: -4px;
    border-bottom-right-radius: 0px;
    border-right: 3px solid black;
}