wekan/client/components/boards/boardHeader.css

.integration-form {
  padding: 0.7vh 0.7vw;
  border-bottom: 1px solid #ccc;
}
.flex,
.option {
  display: -webkit-box;
  display: -moz-box;
  display: -webkit-flex;
  display: -moz-flex;
  display: -ms-flexbox;
  display: flex;
}
.option {
  -webkit-border-radius: 0.4vw;
  border-radius: 0.4vw;
  background: #fff;
  text-decoration: none;
  -webkit-box-shadow: 0 0.2vh 0.3vh rgba(0,0,0,0.2);
  box-shadow: 0 0.2vh 0.3vh rgba(0,0,0,0.2);
  margin-top: 0.7vh;
  padding: 0.7vh 0.7vw;
}

.board-header {
  display: grid;
  flex: 1;
  gap: 0.3lh;
}

body {
  &.mobile-mode {
    .board-header {
      flex-wrap: wrap;
    }
  }
  &:not(.mobile-mode) {
    .header-board-menu {
      flex: 1;
    }
    .board-header {
      justify-content: space-between;
      grid-auto-flow: column;
    }
    .board-header-btns-left {
      flex: 1;
      justify-content: center;
    }
    .board-header-btns-right {
      flex-grow: 0;
      justify-content: end;
    }
    & .board-header-btns-right,
    & .board-header-btns-left,
    & .header-board-menu {
      align-self: center;
      align-items: center;
      display: flex;
      gap: 1.5ch;
      overflow-wrap: normal;
    }
  }
}

/* Make some space on intermediate layouts */
@media screen and (max-width: 1200px) {
  .board-header-btns-right span {
    display: none !important;
  }
}
.header-board-menu, .board-header-btns {
  display: flex;
  align-self: center;
  align-items: center;
  justify-content: center;
  gap: 1ch;
  & p {
    margin: 0;
  }
}

.board-header-btns-right > a {
  flex-wrap: no-wrap;
}
body.mobile-mode {
  header-board-menu h1 {
    font-size: 2em;
  }
  .board-header-btn {
    /* avoid wrapping if possible, at the cost of little icons */
    font-size: 0.5em;
    /* no much choice because the way FA icons are inserted */
    padding-top: 0.1lh;
    min-height: 0.8lh;
  }
  .board-header-btns-right {
    display: grid;
    grid-auto-flow: column;
    grid-template-columns: repeat(auto-fit, 1fr);
    flex: 1;
    gap: 1ch;
    justify-content: start;
    align-items: center;
  }
}
.board-header-btns-left {
  display: flex;
  flex: 1;
  gap: 2ch;
  padding: 0 0.5ch;
}