*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
.main_se_nav{
    position: absolute;
  left: 0;
  width: 100%;
  background: rgba(0, 0, 0, 0.9);
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  transition: max-height 0.5s ease, opacity 0.5s ease;
  z-index: 999;
}
.show_nav {
  max-height: 300px;
  opacity: 1;
}
#menu-icon {
  transition: transform 0.3s ease, opacity 0.3s ease;
}

#menu-icon.fade-out {
  transform: rotate(180deg);
  opacity: 0;
}
.main_se_nav a{
    text-decoration: none;
}
.main_se_nav .se_menu{
    font-size: 15px;
    font-weight: 550;
    padding: 5px 0px 5px 20px;
    font-family: sans-serif;
    color: rgb(248, 246, 246);
    border-bottom: 1px solid gray;
    transition: .4s;
    /* border: 1px solid green; */
}
.main_se_nav .se_menu:hover{
    letter-spacing: 1px;
    transition: .4s;
    background: rgb(41, 39, 39);
}
@media(max-width:500px) {
    .main_se_nav .se_menu{
        font-size: 14px;
    }
}