* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  width: 100%;
  overflow-x: hidden;
}

#header {
  background-color: #f1f1f1;
  padding: 20px;
  color: black;
  text-align: center;
  font-size: 20px;
  font-weight: bold;
  width: 100%;
  transition: 0.4s ease;
  display: flex;
  flex-direction: row;
}
.menu {
  display: flex;
  gap: 20px;
  width: 100%;
  justify-content: end;
  align-items: center;
  flex-direction: row;
  flex-wrap: wrap;
}

.menu.slidedown {
  color: gray;
}

.text-white {
  color: white;
}

#header.slidedown {
  color: red;
  font-size: 20px;
  background-color: black;
  position: fixed;
  top: 0;
  width: 100%;
}
.mobile-menu {
  display: none;
}

/* @@@@@@@@@@@@@@@@@@    Mobile Side   @@@@@@@@@@@@@@@@@@@@@@@@ */

.hamburger-menu {
  display: none;
}
.hamburger {
  background-color: blue;
  transition: all 0.3s ease;
}

@media screen and (max-width: 768px) {
  #header {
    background-color: gray;
    position: relative;
    z-index: 5;
  }
  .menu {
    display: none;
  }
  .hamburger-menu {
    display: flex;
    justify-content: end;
    align-items: center;
    position: absolute;
    width: 25px;
    height: 1.5rem;
    top: 20px;
    right: 20px;
    z-index: 6;
    opacity: 0;
    /*     border: 1px solid red;
    background-color: pink; */
  }

  .hamburger {
    position: absolute;
    width: 25px;
    height: 0.15rem;
    top: 30px;
    right: 20px;
    background-color: blue;
    transition: all 0.3s ease;
  }
  .hamburger > div:before {
    content: "";
    position: absolute;
    width: 25px;
    height: 0.15rem;
    top: -10px;
    right: 0;
    background-color: blue;
    transition: all 0.3s ease;
  }
  .hamburger > div:after {
    content: "";
    position: absolute;
    width: 25px;
    height: 0.15rem;
    top: 10px;
    right: 0;
    background-color: blue;
    transition: all 0.3s ease;
    
  }

  .hamburger-menu:checked + .hamburger {
    transform: rotate(135deg);
  }
  .hamburger-menu:checked + .hamburger > div:before,
  .hamburger-menu:checked + .hamburger > div:after {
    top: 0;
    transform: rotate(90deg);
  }
  .mobile-menu a {
    text-decoration: none;
    color: black;
  }
  .mobile-menu > div:hover {
    font-size: 25px;
    padding: 10px 10px;
    transition: all 0.3s ease;
  }
  .mobile-menu {
    border-top: 1px solid black;
    height: 180px;
    width: 100%;
    overflow: hidden;
    background-color: gray;
    display: flex;
    flex-direction: column;
    font-size: 25px;
    gap: 20px;
    padding: 20px;
    transform: translateY(-100%);
  }
  .mobile-menu.open {
    transform: translateY(0);
    transition: all 0.3s ease;
  }
}