main-site/components/styles/themedropdown.tsx

import styled from 'styled-components';

interface DisplayPropType {
  show?: number;
}

interface ActivePropType {
  active?: number;
}

export const ThemeDropDown = styled.div`
  margin-left: 1%;
  min-width: 180px;
  color: ${({ theme }) => theme.colors.primary}
  display: flex;
  flex-direction: column;
`

export const ThemeDropDownButton = styled.button<DisplayPropType>`
  width: 160px;
  border: 1px solid;
  border-radius: 5px;
  background-color: ${({ theme }) => theme.colors.background};
  padding: 0.2rem 0.5rem;
  cursor: pointer;
  color: ${({ theme }) => theme.colors.primary};

  transition-property: color, border-bottom-left-radius, border-bottom-right-radius;
  transition-timing-function: ease;
  transition-duration: 0.15s;
  transition-delay: 0s, ${ props => props.show ? "0s, 0s" : "0.6s, 0.6s" };

  &:focus,:hover {
    color: ${({ theme }) => theme.colors.secondary};
  }

  border-bottom-left-radius: ${ props => props.show ? "0" : "" };
  border-bottom-right-radius: ${ props => props.show ? "0" : "" };
`

export const ThemeDropDownOptions = styled.div<DisplayPropType>`
  position: absolute;
  color: ${({ theme }) => theme.colors.primary};
  background-color: ${({ theme }) => theme.colors.background};
  display: flex;
  flex-direction: column;
  min-width: 160px;
  border: 1px solid;
  border-top: 0;
  border-radius: 5px;
  border-top-left-radius: 0px; border-top-right-radius: 0px;
  z-index: 1;
  overflow: hidden;
  max-height: ${ props => props.show ? "20%" : "0%" };
  visibility: ${ props => props.show ? "visible" : "hidden" };

  transition-property: max-height, visibility;
  transition-timing-function: ease-in-out;
  transition-duration: 0.6s, 0s;
  transition-delay: 0s, ${ props => props.show ? "0s" : "0.5s" };
`

export const ThemeDropDownOption = styled.button<ActivePropType>`
  color: ${ props => props.active ? ({ theme }) => theme.colors.secondary : ({ theme }) => theme.colors.primary };
  background-color: ${({ theme }) => theme.colors.background};
  cursor: pointer;
  align-self: center;
  border: 0px solid;
  padding: 0.2rem 0.5rem;
  text-decoration: none;
  width: 90%;

  &:hover {
    color: ${({ theme }) => theme.colors.secondary};
  }
`