body{
    position: relative;
}
#main_container{
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;

    display: flex;
    flex-direction: column;
}
#main_header{
    flex-shrink: 0;
}
.main-menu{
    float: right;
}
#main_tabs{
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}
#main_tabs > .menu{
    flex-shrink: 0;
}
#main_tabs>.segment {
    flex-grow: 1;
    margin-bottom: 0 !important;
}
.tab-wrap {
    position: absolute;
    top: 14px;
    left: 14px;
    bottom: 14px;
    right: 14px;
    display: flex;
    flex-direction: column;
}
.tab-body {
    flex-grow: 1;
    overflow-y: scroll;
}
.tab-footer {
    flex-shrink: 0;
    margin-top: 1em;
}
.pack-name{
    white-space: nowrap;
    display: flex;
    align-items: center;
}
.pack-name img{
    width: 32px;
    padding-right: 4px;
}
.pack-descr{
    overflow-y: auto;
    max-height: 20vh;
}
footer {
    flex-shrink: 0;
    display: flex;
    justify-content: space-between;
}
#pack_table_body tr td:nth-child(2),
#pack_table_body tr td:nth-child(5){
    white-space: nowrap;
}
#users_table_body tr td:nth-child(1),
#users_table_body tr td:nth-child(2),
#users_table_body tr td:nth-child(3),
#users_table_body tr td:nth-child(4),
#users_table_body tr td:nth-child(5) {
    white-space: nowrap;
}
#pack_access_body tr td:nth-child(1) {
    white-space: nowrap;
}