#generation-button {
    right: 1em;
    top: 0em;
}



.columns-1 > div {
    display: block;
    width: 100%;
}

.columns-2 > div {
    display: inline-block;
    width: 50%;
}

.columns-3 > div {
    display: inline-block;
    width: 33%;
}

.input-time
{
    width: 100px;
    margin-right: 10px;
}



.wrong-interval
{
	box-shadow: 3px -3px 1px #FF0000;
}